When a boy found frozen in a block of ice is thawed, the world learns he's the Avatar they've been waiting for, and his destiny takes a dizzying turn.

1. The Boy in the Iceberg 24m Katara and Sokka make a startling discovery while fishing: a boy frozen in an iceberg, perfectly preserved and -- amazingly -- alive.

2. The Avatar Returns 22m An accident results in Aang's expulsion from the Southern Water Tribe, and the villagers soon find themselves beset by sinister Prince Zuko.

3. The Southern Air Temple 23m Aang returns to his childhood temple, hoping to find evidence that his people still thrive in the region, but he makes a shocking discovery.

4. The Warriors of Kyoshi 23m Aang, Sokka and Katara go to the island of Kyoshi, where they receive a chilly reception. After Aang proves he's the Avatar, he becomes a celebrity.

5. The King of Omashu 23m Sokka and Katara must again indulge Aang when he drags them to the Earth Kingdom city of Omashu, another favorite haunting ground of his youth.

6. Imprisoned 24m Aang and the others find an Earth Kingdom mining town under the thumb of the Fire Nation, and Katara feels guilty when her actions lead to an arrest.

7. Winter Solstice: Part 1: The Spirit World 24m Aang takes on the task of defending a town from an interdimensional monster, but his untested skills and uncertainty could prove the town's undoing.

8. Winter Solstice: Part 2: Avatar Roku 24m During the winter solstice, Aang must travel into the Fire Nation -- which wants to capture him -- to communicate with his predecessor, Avatar Roku.

9. The Waterbending Scroll 24m While teaching Aang about waterbending, Katara realizes her skills are inadequate. Luckily, she comes across a waterbending scroll at a boutique.

10. Jet 24m A band of rebel guerillas with a charming, roguish leader rescues Aang, Sokka and Katara as they're fleeing the Fire Nation's minions.

11. The Great Divide 24m Arriving at a giant gorge, Aang and his friends encounter two feuding refugee groups fighting over the right to cross the abyss.

12. The Storm 24m When Aang, Katara and Sokka find themselves broke, Katara urges Sokka to take a fishing job. But the plan goes awry when the angler recognizes Aang.

13. The Blue Spirit 24m With Sokka and Katara still ailing from the effects of the storm, Aang must find some frozen frogs to cure his cohorts.

14. The Fortune-Teller 24m Aang, Sokka and Katara come across a village that's dependent on its resident fortune-teller, who has reliably predicted its future for generations.

15. Bato of the Water Tribe 24m Aang acts childish during a reunion between Sokka, Katara and a longtime friend. Fearing that Sokka and Katara will desert him, Aang betrays them.

16. The Deserter 24m Aang and the others slip into a Fire Nation town so he can observe firebending firsthand. But their plans go quickly wrong, and they must seek refuge.

17. The Northern Air Temple 24m On their continuing journey north, Aang and the others hear rumors about a surviving band of airbenders, requiring a visit to the Northern Air Temple.

18. The Waterbending Master 24m After going to the home of the Northern Water Tribe, Aang and Katara search for a waterbending master, and Sokka becomes smitten with a princess.

19. The Siege of the North: Part 1 24m After hunting his prey halfway around the world, Adm. Zhao zeroes in on Aang's location and prepares to lay siege to the entire Northern Water Tribe.