This film is adapted from the well-known animated series "Avatar: The Last Airbender". Water, fire, earth, and air are the four elements that dominate the world. The four races that manipulate these four elements are the Air Temple, the Water Tribe, the Fire Nation, and the Earth Kingdom. The Fire Nation provoked a war, the Air Temple was destroyed, the Water Tribe faced extinction, and fled to the isolated ice and snow; only the Earth Kingdom is still resisting. Avatar is the only person in the world who can protect the balance and harmony of the world, but he suddenly disappeared. In a hundred years, people in dire straits have long forgotten the legend of the savior. On the Antarctic snowfield, the ice suddenly burst, and a mysterious 12-year-old boy An (Noah Ringer) appeared in the frozen sphere, and this child turned out to be the long-lost Avatar! With the help of Katara (Nicola Peltz) of the Water Tribe and her brother Sokka (Jackson Rathbone), Ann awakens her divine power and eventually sets out on the road to save humanity with her companions. But can this child stop the evil Fire Nation from conquering the world?