Watch anime online, stream anime episodes online for free.Watch Avatar the last airbender Book 1 Water Episode 1 English version online and free episodes. Anime Episode guide, Chapter Avatar the last airbender Book 1 Water Episode 1The Boy in the Iceberg While fishing, Sokka and Katara discover Aang and his flying bison Appa icebound floating on the sea. After freeing him, they discover that Aang is an Airbender from the Air Nomads, a race of people assumed to have died out a hundred years before. Later, he reluctantly reveals that he is also the Avatar, the only person with the power to manipulate all four elements. The Avatar is reincarnated generation after generation and would be the only one who could prevent the Fire Nation from conquering all the nations, which is why the Fire Nation exterminated the Air Nomads.