The Fire Nation is waging a ruthless, oppressive war against the other three nations. The film's hero, the reluctant young Aang (Noah Ringer), is the "Last Airbender" -- the Avatar who, according to prophecy, has the ability to manipulate all of the elements and bring all the nations together. Aided by a protective teenage Waterbender named Katara (Nicola Peltz) and her bull-headed brother Sokka, Aang proceeds on a perilous journey to restore balance to their war-torn world.
Jackson Rathbone plays Katara's brother Sokka, and Dev Patel plays Prince Zuko, prince of the Fire Nation. Mandvi is set to play the role of Commander Zhao, an ambitious and hot-tempered Fire Nation commander. Toub is cast as Uncle Iroh, the retired Fire Nation general and devoted surrogate parent to Dev Patel's character Zuko. Curtis is set to play the ruthless ruler Fire Lord Ozai. Keong Sim has been cast in the role of Earthbending Father.