Avatar: The Legend of Aang
The world is divided into 4 nations: Water, Earth, Air and Fire. Within each nation is an order of masters who possess the ability to manipulate their native element.
They call themselves Waterbenders, Earthbenders, Airbenders, and Firebenders.
The most powerful bender in the world is the Avatar, the spirit of the planet incarnate. For 100 years, the ruthless Fire Nation has waged war against the Water, Earth, and Air Nations. The Avatar is the only person who can stop the Fire Nation and bring the world back into balance.
The problem is, the Avatar is just a kid - a fun-loving Airbender named Aang. His destiny is to master all four elements and defeat the Fire Nation, but Aang is reluctant to take on this enormous responsibility.
Aided by a young Waterbender named Katara and her warrior brother Sokka, Aang sets off on a perilous journey to save the world.