Avatar: The Last Airbender: Book 1: Water: Vol. 1

In a world divided into four nations—Water, Earth, Fire, and Air—based on their elemental bending abilities, a young airbender named Aang discovers he is the long-lost Avatar, who can master all four elements to bring balance and peace. Joined by siblings Katara and Sokka, Aang sets out on a journey to learn waterbending and confront the Fire Nation's tyranny.