2005 / The animated serie Avatar is about the world's power that for long was divided over four nations: Earth, Fire, Water and Air. Eventually the world fell out of balance and there was only one Avatar who could save it: Aang.
Aang and the group meet an Earth Kingdom general who wants to use Aang's powerful "Avatar State" as a weapon to defeat the Fire Nation. But getting into the "Avatar state" on purpose is more difficult than Aang thinks.
The kids return to Omashu so that Aang can learn Earthbending from King Bumi. But when they get there, they are shocked to find the city is now in Fire Nation hands. Despite the danger, Aang enters Omashu in search of King Bumi.
Aang and the kids finally arrive in Ba Sing Se to see the Earth King, only to find mysterious forces within the city conspiring to stop them. Meanwhile, Jet tries to find proof that Zuko and Uncle are Fire Nation.
The kids battle Long Feng the Dai Li when they attempt to show the Earth King the vast conspiracy taking place in his city. Zuko becomes seriously ill and has feverish dreams as he faces a spiritual crisis.
When Aang has a vision that Katara is in danger, Aang, Sokka, and Toph all rush back to Ba Sing Se to save her. They meet up with Iroh, who asks their help in saving Zuko who had been captured as well.