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tasked with maintaining peace between the Four Nations of the world. Fearful of the heavy responsibilities of being the Avatar, coupled with the coming separation from his beloved mentor Monk Gyatso (to complete his training), Aang flees from home on his animal guide, a flying bison called Appa. Caught by a fierce storm, they crash into the ocean, and Aang's protective Avatar State freezes them in a state of suspended animation inside an iceberg. Right after his disappearance, Fire Lord Sozin, realizing that according to the Avatar cycle the next Avatar will be born an Air Nomad, launches a genocidal campaign against the Air Nomads. This way he can ensure that the next Avatar will not try to foil his plots for world domination as the last one of his kind. Aang becomes unfrozen by a fourteen-year-old Waterbender girl named Katara, and her older warrior brother, Sokka from the Southern Water Tribe after being in the iceberg for one hundred years. The three travel to the Northern Water Tribe so Aang and Katara can learn Waterbending. While on their journey, Aang and friends visit the Southern Air Temple, where the new Avatar has a tragic encounter, discovering that the Fire Nation has indeed wiped out every last member of the Air Nomads except for himself, and meets up with the only known remaining "winged lemur" while there, that Aang names "Momo", who joins Aang's group. The trio are constantly being pursued by Prince Zuko, the exiled son of the current Fire Lord Ozai, who can only return to the Fire Nation and reclaim his honor and throne if he captures
the Avatar. Zuko travels with his uncle Iroh, a legendary Fire Nation general and older brother of current Fire Lord Ozai. After leaving the North Pole, Aang finishes mastering Waterbending under the instruction of Katara, who has fully mastered the element faster than he has. Aang and friends travel to the Earth Kingdom city of Omashu to master Earthbending. Their initial plan is to learn under Bumi, king of the Earth Kingdom city of Omashu, but they discover that he and Omashu have been captured by the Fire Nation and Bumi is waiting for the right time to strike. Searching for a new Earthbending teacher, the group
Season Two (Book Two: Earth)