Avatar : the Last Airbender

Saving the world is a big job—especially for a kid. Aang has the makings of he's brave, kind, and peaceful. But when he learns he's the next Avatar, responsible for mastering all four elements and destined to save the world, the pressure makes him doubt himself. Aang has a lot to learn and little time to do it. Thankfully, he has friends like Katara, Sokka, Toph, and Appa by his side. They teach him to bend elements and be confident, and in turn, he inspires them to be their best selves. It's Aang's heart—the heart of a hero—that just might help him save the world.