This are the Episodes of:
Avatar: The Last Airbender
This is the list of episodes of Avatar.

Book 1 (Water)

# Title Original US Airdate Production code
1 "The Boy in the Iceberg" 21 February 2005 101
While fishing, Sokka and Katara discover Aang and his flying bison Appa icebound floating on the sea. After freeing him, they discover that Aang is an Airbender, a race of people assumed to have died out a hundred years before. Later, he reluctantly reveals that he is also the Avatar, the only person with the power to manipulate all four elements. The Avatar is reincarnated generation after generation and would be the only one who could prevent the Fire Nation from conquering all the nations, which is the reason why the Fire Nation started the war. Meanwhile, Zuko, the banished Prince of the Fire Nation, is patrolling the seas in search of the Avatar. While exploring an abandoned Fire Nation ship, Katara tells Aang about the war that had been going on for the past hundred years. They accidentally set off an explosion in the ship, which alerts Zuko to the village.
2 "The Avatar Returns" 21 February 2005 102
When Zuko locates the Southern Water Tribe village where Aang had been, he demands the Avatar be surrendered to him. Aang returns into the village, after previously being banished, to surrender himself to Zuko as long as he agrees to leave the village alone. Aboard Zuko's ship, Aang is at Zuko's mercy, but he eventually manages to maneuver away from the guards and to battle Zuko. Katara and Sokka take the flying bison Appa to go after Aang. Aang and his friends manage to defeat Zuko and his subordinates. Katara and Sokka decide to travel with Aang to the North Pole so that Aang can learn Waterbending.
3 "The Southern Air Temple" 25 February 2005 103
Due to an interest in reliving his old memories, Aang suggests a visit to the Southern Air Temple. He tells stories of his old mentor, Monk Gyatso, as well as sports and games that Airbenders used to play. At the temple, Aang finds a flying lemur, whom he names Momo. When he learns the truth about how the Fire Nation had raided his home, Aang becomes angry and enters the Avatar State. Meanwhile, because his ship was damaged by Aang in the previous episode, Zuko needs to stop at a docking area to have it repaired. There, he and his uncle run into Commander Zhao, who manages to learn that the Avatar has been found. Zuko then challenges Zhao to a duel over the right to track the Avatar, which Zuko wins. Zhao tries to kill Zuko after Zuko turns his back on Zhou, though Iroh stops the attack in time.
4 "The Warriors of Kyoshi" 4 March 2005 104
Looking for a short break from their travels, Aang brings the gang to Earth Kingdom on Kyoshi Island, where he seeks to ride the Elephant Koi, a large fish who inhabits the surrounding waters. Before they are able to leave, the gang are captured by a group of female warriors who live on the island. Aang is able to convince them to trust him, for Kyoshi was a past Avatar and he is the current Avatar. While there, Sokka is trained by the Kyoshi Warrior Suki who manages to change his sexist attitude, and Aang lets the village's reverence of him go to his head. Meanwhile, Zuko catches up to them and begins to burn the village until the group leaves the village, knowing that Zuko will follow them.
5 "The King of Omashu" 18 March 2005 105
The next stop on the group's trip around the world is the Earth Kingdom city of the Earth Kingdom on Omashu. There, Aang shows Katara and Sokka the Omashu chute mail delivery system, which he and his friend Bumi used to ride for fun a hundred years ago. The trio gives the chutes a try but runs into trouble after it destroys a cabbage merchant's cart. Put in front of the crazy King of the city, the gang is given a feast. The King suspects that Aang is the Avatar and puts him through three deadly challenges to test his skills. After the last challenge, Aang is forced to figure out the King's name, and based on the nature of the challenges, he realizes that the King is his old friend Bumi. Bumi informs Aang of what his task as the current Avatar entails.
6 "Imprisoned" 25 March 2005 106
Aang, Katara, and Sokka camp near a small Earth Kingdom town that is controlled by the Fire Nation, which bans Earthbending. Katara convinces a young Earthbender named Haru to save an old man with Earthbending, only to have Haru captured by the soldiers. Katara then devises a plan to get herself arrested so Aang and Sokka can follow her to where Haru was taken and liberate him. While at the prison, a metal sea fortress, Aang and Katara incite a rebellion with an inspiring speech and coal that the Earthbenders could use. This starts a riot in which the imprisoned Earthbenders manage to liberate themselves and head to free their occupied cities.
7 "The Spirit World (Winter Solstice, Part 1)" 8 April 2005 107
Aang finds himself in a small Earth Kingdom village that is being attacked by a monster from the Spirit World. One night, this monster (named Hei Bai) captures Sokka. Aang decides to go after him. Aang accidentally ends up in the Spirit World, where he is told that Avatar Roku has a message for him. Aang proceeds to calm the attacking beast, restoring peace to the village. Meanwhile, Iroh gets captured by the Earth Kingdom. The soldiers who captured him wish to take him back to Ba Sing Se to face justice, the city Iroh laid siege to for 600 days as a General. This causes Zuko to stop his chase for the Avatar and to instead go after Iroh.
8 "Avatar Roku (Winter Solstice, Part 2)" 15 April 2005 108
Aang has to travel to the Fire Temple to receive the message from Avatar Roku on the Winter Solstice. They are chased by Zuko and attacked by a Fire Nation blockade led by Zhao on the way there. When Aang gets to the temple he is shocked to learn the five Fire Sages there are no longer the Avatar's allies. However, a friendly sage helps Aang get to the sanctuary where he can talk to Roku. Avatar Roku then informs Aang about "Sozin's Comet," which will return in just under a year and give the Fire Nation the power to finish the war. When Aang leaves the sanctuary, he is attacked by Zhao and the Sages. Aang defeats them when he manifests the spirit of Roku, who destroys the temple.
9 "The Waterbending Scroll" 29 April 2005 109
Katara begins teaching Aang waterbending, but Aang accidentally washes away their supplies while practicing. When they go in town to buy more supplies, Katara finds a waterbending scroll at a store run by pirates. After Katara steals the scroll, the pirates chase the group, who manage to escape. Aang and Katara start practicing waterbending, but Katara becomes frustrated when Aang more easily learns the techniques. Meanwhile, Zuko runs into the pirates and agrees to help them find Aang and the scroll that Katara stole. Zuko proceeds to capture Katara and the pirates capture Aang and Sokka. A fight breaks out between Zuko's crew and the pirates. During the commotion, the group escapes with the waterbending scroll.
10 "Jet" 6 May 2005 110
A band of guerrilla fighters, led by the rogue Jet, rescue Aang, Katara, and Sokka from a small group of Fire Nation soldiers. Jet invites the team back to the Freedom Fighters' hideout, where the group plots out its attacks. Sokka has suspicions about Jet, however, which leads the young rebel to tempt Sokka with missions. His plan fails, making Sokka more skeptical of Jet's motives. Aang and Katara decide to help Jet "save" a nearby Earth Kingdom town, but Jet's real intent is to drown the village. However, Sokka manages to evacuate the city in time to avoid Jet's plot.
11 "The Great Divide" 20 May 2005 111
The next destination the gang stumbles into is the Great Divide, the world's largest canyon. The group begin bickering, so Aang decides to put his Avatar skills to the test. He successfully solves their minor disputes, but Aang tries to put his skills to practical use, when two Earth Kingdom tribes, who have been in a feud for 100 years, need to cross the canyon together. Aang sends Appa across with most needy people of the two tribes, and, with the help of a knowledgeable earthbender, guides the rest across the vast, dry landscape. In the end, Aang is able to end the feud, and the two tribes travel together to the capital city of Ba Sing Se.
12 "The Storm" 3 June 2005 112
The group is in need of money, so Sokka decides to help out a fisherman who is willing to pay him to help him on his next fishing trip, even though a storm seems imminent. The fisherman recognizes Aang as the Avatar "who turned his back on the world." Aang runs away in guilt, but Katara manages to track him down. Aang reveals to Katara that the monks at the Southern Air Temple wanted to send him away to the Eastern Air Temple to separate him from Monk Gyatso, leading to his eventual escape and his accidental trapping of himself in an iceberg. Meanwhile on Zuko's ship, Zuko's own crew begin to question his leadership, until Iroh enlightens them on how the prince received his scar and was banished from the Fire Nation by his own father.
13 "The Blue Spirit" 17 June 2005 113
Sokka suffers from an illness due to his exposure to the elements during the storm. When Katara begins to contract the illness as well, Aang goes to a nearby herbalist institute in hopes of finding a cure for his friends. The herbalist tells Aang to find frozen wood frogs from the valley swamp. On his way to collect frogs and head back to the hideout, Aang is caught by a group of Yuu Yan archers from the Fire Nation. However, a masked Zuko rescues Aang from Zhao, only to allow Aang to escape after he is knocked unconscious during the escape.
14 "The Fortuneteller" 23 September 2005 114
Katara, Aang, and Sokka go into a village that relies solely on the predictions of a fortuneteller, "Aunt Wu". Sokka is skeptical and refuses to believe anything the fortuneteller says, and tries to disprove all the predictions she makes. Katara, on the other hand, is obsessed, and keeps returning to the fortuneteller for more predictions. Aang keeps an open mind, but his opinion quickly changes when he and Sokka fly to the top of the nearby volcano which is filled almost to the brim with lava, disproving one of Aunt Wu's predictions. Katara and Aang use bending to manipulate the clouds as a warning to the villagers, and the group manages to evacuate the village before the volcano erupts.
15 "Bato of the Water Tribe" 7 October 2005 115
Sokka, Aang, and Katara find a seemingly abandoned Water Tribe fleet ship. Camping out by the boat, the kids discover that it belongs to Bato, an old friend of Katara, Sokka, and their father from back at the Southern Water Tribe. While they reminisce about the old days, Aang feels left out, and when talk arrives of Katara and Sokka's father, Aang fears his friends may leave him. When a messenger arrives with a message from Katara and Sokka's father, Aang intercepts it, and keeps it to himself. Later he comes clean about the message, but Sokka is insistent on leaving Aang to find his father. Meanwhile, Zuko finds a bounty hunter named June to help him track down the Avatar. This leads to a skirmish, with Aang, Katara and Sokka winning and continuing on their journey to the North Pole together.
16 "The Deserter" 21 October 2005 116
The protagnonists travel into a Fire Nation town, which is hosting a festival of Fire Nation culture. Unfortunately, Aang's identity is discovered, but a strange man helps the gang escape. This man, named Chey, tells the trio about "the deserter", a man named Jeong Jeong who is the first man to desert the Fire Nation army and live. More importantly, he is a firebending master that is not allied with the Fire Nation. Chey convinces the three to come and meet Jeong Jeong. Unfortunately, Jeong Jeong refuses to teach Aang, though Aang is persistent and eventually is helped by Avatar Roku, who tells Jeong Jeong to teach Aang. During his instruction, Aang is playing carelessly, and accidentally burns Katara, who discovers her healing powers and quickly heals herself. Still, Aang regards firebending as dangerous and vows never to firebend again. Meanwhile, Zhao finds Aang, and the episode ends in a skirmish, which Aang wins.
17 "The Northern Air Temple" 4 November 2005 117
A storyteller tells the gang of people who travel in the air. According to the story, these people reside at the Northern Air Temple. The group decides to check it out, but are disappointed to just see normal people gliding. Aang is saddened that the Northern Air Temple has changed so dramatically since the time when he visited over 100 years ago. Teo, a young paraplegic, convinces Aang to open the one remaining area of the temple left untouched. Aang is shocked to see the room stored with dozens of inventions with Fire Nation insignias on them. The Mechanist, Teo's father, confesses to aiding the Fire Nation with building weapons. When the Fire Nation comes to collect their latest invention, Aang tells them to leave. The Fire Nation proceeds to launch an attack against the temple, but Aang and the villagers manage to successfully defend against the attack. The Fire Nation, however, does manage to recover the invention, a war balloon.
18 "The Waterbending Master" 18 November 2005 118
After the journey to the Northern Air Temple, the group lurks around the waters surrounding the North Pole, seeking out the Northern Water Tribe. They are found by a group of waterbenders from the tribe, who show them the way. Upon arriving, the gang is welcomed warmly by the citizens of the Northern Water Tribe. The chief of the tribe throws a huge party in celebration of the Avatar's arrival to the North Pole. Sokka meets Yue, an attractive princess whom he falls for. Aang and Katara seek to learn waterbending from a master named Pakku, but he refuses to teach Katara due to sexist customs. Katara proves herself worthy, and Pakku eventually teaches both. Meanwhile, Admiral Zhao hires pirates to assassinate Zuko. But Zuko survives and sneaks aboard Zhao's lead ship as the Fire Nation readies for an attack on the North Pole.
19 "The Siege of the North, Part 1" 2 December 2005 119
As the Fire Nation's forces close in on the Northern Water Tribe, the leaders and citizens scramble to find a way to defend against the armada. As night begins to fall, Admiral Zhao decides to heed Iroh's advice and halt the attack since waterbenders are stronger under the moonlight. Zuko leaves Zhao's ship and infiltrates the tribe on his own, seeking to capture Aang. Aang believes going into the spirit world and speaking to the moon and ocean spirits could give him the wisdom to defeat the Fire Nation. However, after Aang's spirit leaves for the spirit world, Zuko manages to kidnap his body.
20 "The Siege of the North, Part 2" 2 December 2005 120
Zuko struggles to find shelter in the freezing temperatures of the North Pole, while Sokka, Katara and Yue search for him and Aang. At the Northern Water Tribe, firebenders and Fire Nation tanks manage to infiltrate the city. Admiral Zhao slays the moon spirit, Tui, and the waterbenders lose their ability to waterbend. In anger, Aang, who along with Zuko was rescued by Sokka, Katara and Yue, goes into the Avatar State and destroys the entire Fire Nation armada and army, with the exceptions of Iroh and Zuko. Yue, who was imbued with some of the energy of the Moon spirit when she was a baby, sacrifices her life to revive it, and becomes the Moon spirit.

Book 2 (Earth)

# Title Original US Airdate Production code
21 "The Avatar State" 17 March 2006 201
Aang, Katara, Sokka, Momo, and Appa travel to an Earth Kingdom military base to receive an escort to the city of Omashu, where King Bumi can teach Aang Earthbending. But the general at the military base suggests that Aang defeat the Fire Lord immediately by triggering the Avatar State, a powerful defensive mechanism used by the Avatar. Meanwhile, Zuko found out that his sister, Azula has come to bring him and Uncle Iroh to the Fire Nation to be punished. After many failed attempts, the General finally succeeds in triggering the Avatar State by faking Katara's death. Aang nearly destroys the base in anger and the group decides to go to Omashu alone.
22 "The Cave of Two Lovers" 24 March 2006 202
While on the way to Omashu, Aang and the group meet a group of carefree traveling bards, who take them through a vast tunnel known as "The Cave of Two Lovers". In the cave, Aang, Katara, and Appa become separated from Sokka and the bards. Elsewhere, Zuko and Iroh are sheltered by kind Earth Kingdom villagers after Iroh accidentally drinks tea made of a poisonous plant. Song, a young and compassionate healer, shows Zuko the effects of war from a normal citizen's perspective.
23 "Return to Omashu" 7 April 2006 203
Aang and the group find Omashu captured by the Fire Nation. They sneak in and are caught by Fire Nation soldiers, but released when pockmarks on Sokka create the illusion of illness. They then meet a resistance movement, and help the whole city escape by creating a fake epidemic with the same pockmarks. However, the Fire Nation Governor's son accidentally leaves with the citizens. Aang attempts to trade him for King Bumi, but fails when Azula calls off the trade. Aang manages to rescue Bumi, but Bumi allows himself to be recaptured, saying that he must wait for a more proper time.
24 "The Swamp" 14 April 2006 204
While flying over a swamp, Aang, Katara, Sokka, and Appa get separated by a tornado. In the swamp, the gang begins to see visions: Sokka sees visions of Princess Yue; Katara sees visions of her mother; Aang sees visions of an unknown girl, who is later revealed to be Toph. Meanwhile, Appa and Momo are captured by local Waterbending, and are saved from being eaten near the end of the episode.
25 "Avatar Day" 28 April 2006 205
The group stumbles upon a town celebrating an Anti-Avatar Day. The villagers blame the Avatar for killing their leader Chin the Great in a past life. The villagers eventually discover Aang's identity and arrest him. Meanwhile, Zuko disguise as The Blue Spirit, steals food for himself and his uncle. But Iroh is not happy with what Zuko is doing. And Zuko decides to go his own way. In Aang's trial, Avatar Kyoshi appears and confesses about the crime. However, Fire Nation soldiers begin to attack the village, and Aang stops the raid before much damage is done, causing the village to pardon the Avatar's crime and change the "Anti-Avatar" celebration to a pro-Avatar celebration.
26 "The Blind Bandit" 5 May 2006 206
While at an Earthbending tournament, the group sees the blind Earthbending Master Toph. Aang challenges and easily defeats her with Airbender. Toph still refuses to teach Aang Earthbending. Later, Aang and Toph are captured by the owner of the Earthbending Tournament. Toph uses her Earthbending to save them, but her parents angrily confine Toph to their home and banish Aang from their home. Later that night, Toph leaves home to join Aang. Toph's father hires both the owner of the Earthbending Tournament, Xin Fu, and her Earthbending instructor, Master Yu, to go after her.
27 "Zuko Alone" 12 May 2006 207
After leaving his uncle, Zuko continues his journey to an Earth Kingdom town alone, where a young boy brings him home to dinner. Zuko has flashbacks about his life before banishment, such as incidents with his sister Azula and his loving mother. Zuko also remembers his uncle Iroh's long siege of Ba Sing Se, the death of his cousin, Lu Ten, and the revocation of Iroh's birthright to the throne. After revealing his identity to the town's people, Zuko has flashbacks about the disappearance of his mother, his grandfather's funeral, and Ozai's crowning as Fire Lord.
28 "The Chase" 26 May 2006 208
Aang, Katara, Sokka and Toph are chased by an unknown machine, which makes it impossible for the group to stop and sleep. After cleaning Appa so his fur does not leave a trail, Aang goes one way as a decoy, and Sokka and Katara go another direction on Appa. Sokka and Katara are tracked by Ty Lee and Mai, who were inside the machine. Meanwhile, [Azula], Zuko's sister, chases Aang. When the two start fighting, Zuko comes and tr ies to capture Aang and fight off Azula. Eventually, Katara, Sokka, Iroh, and Toph help to corner Azula. Azula pretends to surrender, only to wound Iroh with a lightning blast before making her escape.
29 "Bitter Work" 2 June 2006 209
Despite interference from his Airbender philosophy, Aang attempts to learn Earthbending from Toph. Meanwhile, Sokka is stuck in a hole after trying to hunt an animal. When Aang finds Sokka, Aang is forced to save him from a wild animal. Toph appears, and uses Aang's agitated state to teach him the basics of Earthbending. Elsewhere, Iroh teaches Zuko how to re-direct lightning, so he will be better able to fight Azula.
30 "The Library" 14 July 2006 210
A professor tells the group about a hidden Spirit Library in the desert. Inside, Sokka discovers a crucial weakness of the Fire Nation that could end the war: the date of the upcoming solar eclipse. However, the spirit of the library, Wan Shi Tong, begins to sink the library, thinking that Sokka will only use the knowledge to fuel a war. Outside, Toph is distracted by the library sinking, and cannot defend Appa while he is kidnapped by Sandbenders. They all escape from the library but are devastated by Appa's disappearance.
31 "The Desert" 14 July 2006 211
The gang walks across the desert to tell the Earth King about the Fire Nation's secret. Elsewhere, a secret society helps protect Iroh and Zuko from the Fire Nation. While there, they are recognized by the men hired by Toph's father, who plan to capture them for the reward. Meanwhile, Aang eventually tracks down the Sandbenders who stole Appa, and learns that Appa has probably been traded to a merchant in Ba Sing Se. The gang then continues to Ba Sing Se, now with two goals to complete in the city.
32 "The Serpent's Pass" 15 September 2006 212
After leaving the desert, the group meets up with Suki, and attempts to lead a couple through the Serpent's Pass. While Zuko and Iroh are on a ferry to Ba Sing Se, they meet Jet, who is trying to turn his life around. Jet takes an instant liking to Zuko and asks if he wants to join him and his Freedom Fighters. Meanwhile, the gang is attacked by a giant serpent, hence the name "The Serpent's Pass". They head to Ba Sing Se's outer wall only to find a drill on a direct path towards it.
33 "The Drill" 15 September 2006 213
Aang discovers a Fire Nation drill heading straight for Ba Sing Se, with Azula, Ty Lee, and Mai inside. An Earth King General gives him the task of stopping it before it destroys the wall that protects the city. Aang and the group succeed in stopping and destroying the drill from the inside. Meanwhile, Jet wishes to recruit Zuko for his Freedom Fighters, but learns that Zuko and Iroh are Firebenders after seeing Iroh heat his tea at a Ba Sing Se train station.
34 "City of Walls and Secrets" 22 September 2006 214
Aang and the rest of the group arrive in Ba Sing Se to find Appa and inform the Earth King about the solar eclipse, but are constantly hindered by their tour guide, Joo Dee. They are informed about how the city has been keeping the war a secret from its citizens, and are warned not to make a disturbance. Elsewhere, Jet repeatedly tries and fails to gather evidence that Zuko and Iroh are Firebenders. His last attempt, challenging Zuko to a sword fight, ends in his own arrest. The group is escorted home by an eerie woman who claims to be Ju Dee.
35 "The Tales of Ba Sing Se" 29 September 2006 215
This episode contains a collection of six "mini-episodes": Katara and Toph have a girls' day out; Iroh helps people in town before celebrating the birthday of his dead son; Aang helps a zookeeper build a new zoo; Sokka accidentally ends up in a poetry club; Zuko goes out on a date; Momo looks through Ba Sing Se for Appa. The mini-episode where Iroh helps out people in the town was dedicated to Mako.
36 "Appa's Lost Days" 12 October 2006 216
This episode starts during the events of "The Library". It shows Appa's abduction and his various adventures over the next few weeks. These include performing in a Fire Nation circus, fleeing from a startled farmer, and fighting with a porcupine boar. Afterwards, Suki and her Kyoshi warriors help him recover from his injuries. When Suki and the group are attacked, she convinces Appa to flee to find Aang, despite his willingness to fight. At the temple, a mysterious guru provides him with aid on his search, telling him to go to Ba Sing Se, where he is captured by Long Feng.
37 "Lake Laogai" 3 November 2006 217
The gang continues looking for Appa, so Long Feng tries to throw them off by sending a brainwashed Jet to make them leave the city. They meet up with Longshot and Smellerbee, and realize what Long Feng had done to Jet. They then travel to where Jet was brainwashed, Lake Laogai, in hopes of finding Appa. Instead, they encounter Long Feng and battle. Near the end of the episode, Jet is presumably killed by Long Feng. Elsewhere, Zuko finds Appa and discovers that Aang is in the city. However, Zuko decides to free the Sky Bison; Aang and Appa are reunited at the end of the episode.
38 "The Earth King" 16 November 2006 218
The gang breaks into the Earth King's palace to tell him about the war that had been going on without his knowledge. The gang repeatedly fails in attempting to persuade the Earth King to believe them. However, they manage to convince the Earth King by showing him the drill that the gang had stopped in a previous episode. After they persuade Earth King, Long Feng is arrested and put in jail. After returning from Lake Laogai, Zuko faces a moral quandary and subsequently falls ill. The gang receives information that the Kioshi warriors have arrived, and are excited to see them after their personal travels. At the end of the episode the audience learns that it is Azula, Ty Lee, and Mai dressed in Kioshi warrior outfits.
39 "The Guru" 1 December 2006 219
Aang travels to the Eastern Air Temple to learn control of the Avatar State from Guru Pathik. Meanwhile, Toph is captured by Xin Fu and Master Yu, who attempt to transport Toph back to her parents. She is put in a metal box, which she escapes from by teaching herself "metalbending". Iroh became very pleased when he sees his nephew, Zuko is in a very cheerful mood. Sokka receives a warm welcome from his father and other of his tribesmen, while Katara and the "Council of Five" generals plan an invasion of the Fire Nation. Katara and the Council are captured by Azula, who is disguised as a Kyoshi warrior. Aang sees the whole situation in a vision, and immediately gathers everybody to help.
40 "The Crossroads of Destiny" 1 December 2006 220
Azula and the Dai Li stage a coup and all five major generals are captured at once. Aang is unable to stop Azula's plan and the Earth Kingdom falls to the Fire Nation. Aang is critically injured by Azula in battle, and Iroh gives him time to escape before being betrayed by Zuko. At the end of the episode, Aang and the gang escape on Appa, where Katara heals Aang using water from the Spirit Oasis, which she obtained at the beginning of Season Two.

Book 3 (Fire)

# Title Original US Airdate Production code
41 "The Awakening" 21 September 2007 301
Aang awakes to find himself crippled onboard a stolen Fire Nation ship with the group, Bato, and Hakoda. Aang is shocked to discover that following his injury in the second season finale in Ba Sing Se, the world believes him to be dead. After a great deal of persuasion, Aang agrees to keep his existence a secret. Zuko and Azula sail home in peace, but Zuko secretly fears being rejected by his father, Fire Lord Ozai.
42 "The Headband" 28 September 2007 302
Aang and the group steal Fire Nation clothes as temporary disguises. Aang accidentally takes a school uniform and is taken to a Fire Nation school, where he gets into a fight and arranges a school-wide dance party in the cave the group is staying in. Meanwhile, Zuko believes that Aang did not really die in Ba Sing Se and goes to Iroh's prison to ask for his advice. He then hires an assassin to find and kill Aang.
43 "The Painted Lady" 5 October 2007 303
Aang sees a Fire Nation village on a polluted river, and the gang heads to it for food. Seeing the starving and ill people, Katara wishes to help them, against the objections of Sokka and the rest, who wish to continue forward. Katara feeds Appa berries to make it seem like Appa is sick, and the group is forced to stay near the town. Over the next few days a mysterious spirit appears, heals the sick of the town, and leaves food. Aang discovers that it is Katara who has been acting as the spirit, and he helps her to destroy the water-polluting factory. After scaring off the angered soldiers the next day, they help clean up the river.
44 "Sokka's Master" 12 October 2007 304
Sokka feels left out when he is the only person who is unable to help stop a forest fire caused by a fallen meteorite from a meteor shower. Sokka finds the sword master Piandao, who trains him to use a sword made out of a meteorite. After Sokka masters his training, Master Piandao gives him a White Lotus Pai Sho Piece, which is used by the members of the Order of the White Lotus. Meanwhile, Iroh devises a plan to escape the prison and starts bodybuilding in secret.
45 "The Beach" 19 October 2007 305
Zuko, Azula, Mai and Ty Lee go on vacation to Ember Island and learn more about each other. Meanwhile, Aang and the rest of his team are being chased by an assassin hired by Zuko, who has a unique ability to Firebend from his mind's eye. The group manages to escape, but the assassin follows.
46 "The Avatar and the Firelord" 26 October 2007 306
Aang is told in a dream to go to Avatar Roku's birthplace and Zuko receives a mysterious message about his great-grandfather's past. Aang and Zuko learn about Sozin and Roku's childhood friendship, their falling out, and Sozin's betrayal of Roku. Zuko learns that Sozin and Roku are his paternal and maternal great-grandfathers.
47 "The Runaway" 2 November 2007 307
Katara expresses her disapproval when Toph begins defrauding Fire Nation civilians for quick cash. Toph thinks Katara is acting too motherly, and a rift forms within the group. Katara decides to perform a scam with Toph to patch things up, but they are captured by local authorities. Combustion Man, the assassin from the previous episode, uses the two as bait in an attempt to kill Aang.
48 "The Puppetmaster" 9 November 2007 308
The gang discovers that there have been strange disappearances in a spooky town. The old innkeeper, Hama, is secretly a Waterbender from the Southern Tribe, and the group stays with her for a while. Hama teaches Katara some of the Southern Water Tribe's past and some special Waterbending techniques. Katara discovers Hama has been causing the disappearances by kidnapping civilians with a technique called "Bloodbending". The resulting battle forces Katara to fight Hama and save the others from her grasp. Katara is forced to use Bloodbending in the battle, which leaves her emotionally scarred.
49 "Nightmares and Daydreams" November 16, 2007 309
The group arrives at the rendezvous point for an invasion four days ahead of schedule, but Aang begins to feel nervous about confronting the Fire Lord. Feeling that he is unprepared, he trains constantly, causing him to hallucinate and have nightmares. The group tries to help him relax in their own ways, but he soon stops sleeping entirely. It takes the collaboration of Sokka, Toph, and Katara to get him to relax and finally sleep well. When Zuko is not told of a War Meeting, he grows angry and distrustful of his father.
50 "The Day of Black Sun Part 1: The Invasion" 30 November 2007 310
On the day of the solar eclipse, the invasion begins. Hakoda returns with several people whom the group has met during their adventures, including Haru, Teo, The Duke and Pipsqueak, the Foggy Swamp Tribe, the Boulder and Hippo. The Mechanist created several of Sokka's designs, including submarines, which are used to sneak into the Fire Nation capital. The invasion force breaks through many security barriers, including the Gates of Azulon.
51 "The Day of Black Sun Part 2: The Eclipse" 30 November 2007 311
Sokka and Toph attempt to help Aang find the Fire Lord in time for the eclipse, but Azula stalls them and the eclipse passes before they can find him. Meanwhile, Zuko confronts his father and vows to help Aang defeat him, causing Ozai to attempt to kill his son. In the meantime, Iroh escapes from jail. The invasion force is forced to retreat, but when the submarines are destroyed, Aang and the younger children are forced to abandon the warriors, who are captured by the Fire Nation.
52 "The Western Air Temple" 14 July 2008 312
Seeking redemption, Zuko follows Aang and his friends to the Western Air Temple. There, Zuko desperately tries to prove to them that he has changed for the better. It is only after Zuko helps save the group from "Combustion Man" that he receives the group's acceptance. However, Katara does not trust Zuko, and warns him of the consequences of any treachery.
53 "The Firebending Masters" 15 July 2008 313
Zuko's Firebending powers weaken substantially, so he and Aang travel to the temples of the Sun Warriors to learn about the origin of Firebending. After discovering that the Sun Warriors still exist, Zuko and Aang are sent to confront original Firebenders, two dragons, to seek the origin of Firebending. After performing a Firebending dance they learned earlier in the episode, Zuko and Aang are taught the real art of Firebending by the Firebending masters.
54 "The Boiling Rock, Part 1" 16 July 2008 314
Sokka and Zuko travel on their hot air balloon to the Boiling Rock, the maximum security prison of the Fire Nation, in hopes of saving Sokka's father, Hakoda, who was captured in the failed invasion. After discovering Suki, they learn that there are no Water Tribe prisoners in there, Sokka, Zuko, and Suki plan to escape in the "Coolers". Another Fire Nation prisoner named Chit Sang escapes with them. Sokka, Zuko, and Suki then stay behind to rescue Hakoda, while Chit Sang and his prisoner friends escape in the Cooler. But the escape fails and Chit Sang is returned to the prison.
55 "The Boiling Rock, Part 2" 16 July 2008 315
After Chit Sang's failed escape, Zuko too is imprisoned. Sokka goes in his father's cell to see Hakoda, and the three create another plan to escape the Boiling Rock. The prison warden attempts to force Chit Sang to tell him the creator of his escape plan, but Chit Sang lies to the warden about who it truly is. Meanwhile, Sokka, Zuko, Suki, and Hakoda decide to start a riot to cover their escape and kidnap the warden to do so. Zuko's sister, Azula, and her two friends Mai and Ty Lee, come to the prison and try to capture the group. Mai and Ty Lee betray Azula and help the group escape, so Azula imprisons both of her friends.
56 "The Southern Raiders" 17 July 2008 316
Zuko confronts Katara about her distrustful disposition toward him and finds out that Katara is taking her anger about her mother's death out on him. He then decides to help Katara find the Fire Nation soldier responsible for killing her mother. They find out that her mother said she was the last Waterbender to protect the real last Waterbender of the Southern Water Tribe: her daughter Katara. Katara finds herself unable to kill the man when she finally confronts him. After returning, Aang is proud of her for not seeking her revenge, and Katara finally forgives Zuko of his past betrayal in the Ba Sing Se catacombs.
57 "The Ember Island Players" 18 July 2008 317
Sokka discovers that the Ember Island Players, a Fire Nation theater group, is debuting a comedy based upon the group's adventures. After deciding to see the play, everyone is furious at their portrayals except Toph, who is played by a muscular actor. The ending of the play, a comedic version of the upcoming battle between Ozai and the Avatar in which Ozai kills the Avatar, frightens Aang.
58 "Sozin's Comet, Part 1: The Phoenix King" 19 July 2008 318
When Aang reveals his decision to wait until after the comet passes to confront Ozai, Zuko explains the Fire Lord's plan to use the power of Sozin′s Comet to destroy all of the Earth Kingdom; forcing Aang to attack the Fire Lord before the comet's arrival. During the night, Aang is drawn towards an island, prompting the group to find a tracker as an attempt to locate him. The Fire Lord crowns himself Phoenix King and Aang awakens on an island not knowing where he is.
59 "Sozin's Comet, Part 2: The Old Masters" 19 July 2008 319
While on the island, Aang seeks guidance from his past lives, but is not pleased with what he is told. The island, in fact, turns out to be a lion turtle from whom Aang is given the guidance he had been seeking. After the tracker is unable to find Aang, the rest of the group decide they must find Iroh. When they find Iroh, the group meets the Order of the White Lotus, an order which transcends the division of the four nations. After a discussion with Iroh, the team decides to split up; Sokka, Suki, and Toph head to stop the Fire Nation's air fleet, the Order goes to reclaim Ba Sing Se for the Earth Kingdom, and Katara, Zuko, and Appa head to defeat Azula.
60 "Sozin's Comet, Part 3: Into the Inferno" 19 July 2008 320
Zuko and Katara confront Azula, but she challenges Zuko to a one-on-one Agni Kai. Zuko is wounded by a blast of lightning while protecting Katara. Meanwhile, Aang finally confronts Ozai but finds himself overwhelmed by Ozai's comet-enhanced Firebending. Sokka, Toph, and Suki attempt to halt the fleet but are soon separated, while the Order of the White Lotus battles for Ba Sing Se.
61 "Sozin's Comet, Part 4: Avatar Aang" 19 July 2008 321
During the battle, Ozai manages to slam Aang into a sharp rock, which stabs Aang's scar. Aang releases the seventh chakra and enters the "Avatar state". Though Aang easily overwhelms Ozai, he refuses to kill him. Aang instead uses Energybending to strip Ozai of his Firebending powers. The Order of the White Lotus manage to liberate Ba Sing Se, and Katara manages to defeat Azula and heal Zuko. During his coronation, Fire Lord Zuko promises to aid the world in reconstruction.