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Season guide

Avatar: The Last Airbender: Book One: Water

20 episodes Premiered Feb 21, 2005 Updated Jul 20, 2026

Avatar: The Last Airbender is an animated television series classified for

Season overview

Avatar: The Last Airbender is an animated television series classified for

Season 1 Episodes

Episode Guide

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Season 1: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

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Mytharc (4): Crucial lore & season climaxes
Core (16): Character development & subplots
Side Quest (0): Standalone / filler
S1·E1 Mytharc

The Boy in the Iceberg

Feb 21, 2005 · 24 min

Two teenage siblings (Sokka and Katara) living in the South Pole discover a very strange boy (Aang), along with his pet flying bison Appa, in an iceberg. But can they trust him whe

S1·E2 Core

The Avatar Returns

Feb 21, 2005 · 24 min

Katara and Sokka discover that Aang is the long-lost Avatar and must rescue him when a firebending prince named Zuko kidnaps him.

S1·E3 Core

The Southern Air Temple

Feb 25, 2005 · 25 min

Aang is excited about going home for the first time in one hundred years, but he is shocked to find out that the temple is deserted. Aang tells Sokka and Katara about his childhood

S1·E4 Mytharc

The Warriors of Kyoshi

Mar 4, 2005 · 24 min

The gang arrives at Kyoshi Island and are captured by some Kyoshi warriors. When Aang reveals that he is the avatar, news quickly spreads out, eventually reaching Zuko, who then go

S1·E5 Core

The King of Omashu

Mar 18, 2005 · 25 min

Aang's abilities as an airbender are challenged by a strange king.

S1·E6 Core

Imprisoned

Mar 25, 2005 · 25 min

In a nearby Earth Village, the gang meets a teenage earthbender named Haru. This village lives in fear of the Fire Nation, for soldiers there capture any earthbenders they can find

S1·E7 Core

The Spirit World: Winter Solstice (1)

Apr 8, 2005 · 25 min

Aang and friends visit a village being terrorized by an angry spirit. Iroh is captured by Earth Kingdom soldiers.

S1·E8 Core

Avatar Roku: Winter Solstice (2)

Apr 15, 2005 · 24 min

To contact the spirit of the previous Avatar, Aang must reach a temple in the Fire Nation before the sun sets on the following day. There he will learn what he must do to restore b

S1·E9 Core

The Waterbending Scroll

Apr 29, 2005 · 25 min

After Katara attempts to teach Aang waterbending, but realizes that he is learning it much faster than she is, she is desperate to improve her abilities. When Katara inadvertently

S1·E10 Core

Jet

May 6, 2005 · 25 min

While traveling towards the North Pole, the group almost gets captured by the Fire Nation. However, when a charismatic young man and his band of rebels attack the Fire Nation camp

S1·E11 Core

The Great Divide

May 20, 2005 · 25 min

While on their way to the North Pole, Aang and his friends arrive at a giant canyon where two groups of refugees are bickering over who should get to go across. Aang decides to wa

S1·E12 Core

The Storm

Jun 3, 2005 · 25 min

Sokka accepts a job for a fisherman who is looking for someone to help him out with his fishing. After the fisherman finds out Aang is the Avatar, Aang runs away in response to the

S1·E13 Core

The Blue Spirit

Jun 17, 2005 · 25 min

While Aang, Katara and Sokka are traveling, Sokka gets a fever. Katara and Aang try to help Sokka, when Katara also catches the fever. It's up to Aang to go up on his own to save h

S1·E14 Core

The Fortuneteller

Sep 23, 2005 · 25 min

When the group tries to help a man who is being attacked by a platypus-bear, they discover that the local town has a fortuneteller named Aunt Wu in it, who has been forecasting the

S1·E15 Core

Bato of the Water Tribe

Oct 7, 2005 · 25 min

Aang feels neglected as Katara and Sokka reunite with Bato, an old friend of their father’s from the South Pole. They begin to reminisce on their times in the past while they wait

S1·E16 Core

The Deserter

Oct 21, 2005 · 25 min

Aang and his friends go to a Fire Nation town so that Aang can witness some firebending, but their plan soon goes awry when it’s discovered that he is the Avatar. Fortunately, he's

S1·E17 Core

The Northern Air Temple

Nov 4, 2005 · 25 min

When Aang and his friends hear rumors about surviving airbenders, they decide to stop by the Northern Air Temple on their way to the North Pole to see for themselves. What they fin

S1·E18 Core

The Waterbending Master

Nov 18, 2005 · 25 min

When Aang tries to find the north pole, he is found by the north pole instead. As they are taken there, Aang and Katara are eager to find a waterbending master, only to discover th

S1·E19 Mytharc

The Siege of the North (1)

Dec 2, 2005 · 25 min

Zhao begins to launch his attack against the Northern Water Tribe. As the walls of the prestiged city begin to fall, the Avatar taps into the spirit world and seeks the help of one

S1·E20 Mytharc

The Siege of the North (2)

Dec 2, 2005 · 26 min

Aang returns from the spirit world to a big surprise. Meanwhile, Zhao and his forces continue to press deeper into the Northern Water Tribe. Iroh makes a powerful stand and Zuko st