Avatar: The Last Airbender is a Nickelodeon show about an airbender who must learn three other elements before summer, and save the entire world. This airbender, a twelve year old nomad named Aang , is the very last airbender, and is the Avatar, the only person capable of learning all four elements (water, earth, fire, and air). He awoke after being frozen in a block of ice, along with his air bison Appa, to find a world thrown into war by the Fire nation. He was found by two Water tribe children, Katara, the only water bender in the South pole, and her brother Sokka, a non bender. They become a group, and travel the world, helping anyone they can, while Aang learns water bending, earth bending, and fire bending (in that specific order). Along the way, they meet lots of people, including Toph, an earthbender who would join them to teach Aang, Zuko, who started as an enemy, but eventually joined them to teach Aang firebending, Momo, a lemur who they found at the Southern Air temple, and many more.
Aang must learn the elements before the Firelord Ozai, and the rest of the Fire nation army, take over or destroy the rest of the world like they did to the Air Nomads. It lasted for three seasons (Book 1: Water, Book 2: Earth, and Book 3: Fire, and produced spin-offs, including comic books, and a sequel (Legend of Korra). It borrows heavily from both Anime and Asian culture, and dealt with mature subject that makes it enjoyed by all ages.