When a young Waterbender named Katara and her warrior brother Sokka rescue a strange boy named Aang from a cavernous iceberg, they have no idea what they've discovered and what danger awaits them.

Aang is the last of the Airbenders – having been frozen in the iceberg for over 100 years. His people, the Air Nomad Nation, were wiped out by the aggressive Fire Nation and he is the last of his kind. Sokka and Katara soon discover that Aang is also the long lost Avatar – the only human capable of mastering all four elements: air, water, earth and fire.

With the weight of being the Avatar on his shoulders, Aang must master the other three elements so he can face his destiny and stop the ruthless Fire Nation from conquering the world. Did we mention he's only 12?