"Watermelon. Earthmelon. Firemelon. Airmelon. Long ago, the four melons lived together in harmony. Then, everything changed when the Firemelon nation attacked. Only the Avamelon, master of all four melons, could stop them, but when the world needed him most, he vanished. A hundred years passed and my brother and I discovered the new Avamelon, an airmelon bender named Aang. And although his airmelon bending skills are great, he has a lot to learn before he's ready to save anyone. But I believe Aang can save the world."