Katara and Sokka (a brother and sister) discover the Avatar (a 12-year-old Airbender boy named Aang) frozen in an iceberg. Together the three begin their journey to the North Pole to find a master Waterbender so Aang can begin his Avatar training!
Katara and Sokka, a brother and sister from the Southern Water Tribe, discover a twelve-year-old boy frozen in an iceberg. Katara wonders if this boy is the Avatar whom the world has been awaiting for a hundred years.
Prince Zuko, a young Firebender whose mission in life is to capture the Avatar, tracks Aang down to the Southern Water Tribe village where Katara and Sokka live.
Aang is eager to take Sokka and Katara to the Air Temple where he was raised. But upon arrival, it becomes apparent that the temple is not at all how Aang remembers it.
When locals of a small island discover Aang is the Avatar, they treat him like a celebrity.
Aang takes Katara and Sokka to an Earthbender city. The kids cause damage and are brought before a crazy old king, who seems to enjoy messing with the kids' heads.
The kids come to an Earth Nation town which is occupied by the Fire Nation. But will Katara's attempts to inspire the oppressed people help them or hurt them?
Aang, Katara, and Sokka arrive at a town being terrorized by a mysterious force from the spirit world. Aang doesn't know how to help these people, and realizes he has much to learn about being the Avatar.
During the winter solstice, Aang must reach a Fire Nation temple while dodging Prince Zuko, Commander Zhao, and the Fire Sages who guard it.
When Katara's desire to master Waterbending gets the best of her, the kids find themselves on the run from pirates.
Our heroes' friendship is tested when they meet Jet, a charismatic teenager leading a band of rebels who are fighting against the Fire Nation.
When Aang and friends come to the rim of a giant canyon, they are asked to help guide two groups of refugees across. Aang quickly learns that this will be no easy task.
A powerful storm brings up painful memories of the past - and puts everyone in jeopardy in the present.
When Sokka and Katara get too sick to travel, Aang goes out on his own to find a cure for them. But he is captured by Zhao and held prisoner inside an impenetrable fortress.
Aang, Katara, and Sokka discover a village of people who are all reliant on a fortuneteller in their everyday lives - but they are so reliant that they are blind to the immanent danger they are all in.
Aang feels insecure when Katara and Sokka come across something that reminds them of home. Because Aang thinks his friends might leave him, he hides an important message which only leads to trouble.
Aang attempts to find a Firebending master to teach him while Katara learns that she possesses a special power.
After hearing rumors about surviving Airbenders, the kids journey to the Northern Air temple to see for themselves. What they find there could spell disaster for all enemies of the Fire Nation.
The kids reach the Northern Water tribe, and Aang and Katara look for a Waterbending Master as Sokka falls for a princess. Meanwhile, Zhao plans an attack and Zuko must find a way to continue his quest for the Avatar.
The Northern Water Tribe braces itself for an attack by Admiral Zhao's Fire Navy fleet. In the heat of battle, Aang struggles to defend the city. He wonders if there isn't a better way to use his Avatar abilities.
Zhao's invasion breaks through the outer wall of the Northern Water Tribe's defenses, and he reveals a sinister plan. Aang goes to the spirit world for help - but will he return in time to stop Zhao and prevent the destruction of the Water Tribe?