Aang is the last Airbender. They were the only race of people who could control the air. He is 112 years old. He has not become older because he had been frozen in an iceberg for 96 years, and is still like a 12 year old, because he used Avatar State to protect himself and his bison. In the second show, it is discovered that Aang is the living form of the Avatar. This is the spirit of the planet in human form. As the Avatar, Aang controls the elements and must keep the Four Nations at peace. The show follows Aang's journeys to do this.