Avatar: The Last Airbender is a Nickelodeon tv show that features Aang. Aang is the Avatar, the only being in the world who can master the four elements of water, earth, fire, and air and the last airbender. 100 years ago, Fire Lord Souzen began to wage war on the Water Tribes, the Earth Kingdom, and the Air Nomads. Aang was lost in a storm and accidentally sealed inside of an iceberg. 100 years later, Katara (the last water bender in the South Pole) and her brother Sokka discover Aang and his flying bison Appa trapped in the iceberg. Little do they know, that Aang is the key to the end of the war.