The story follows the adventures of Aang, a young successor to a long line of Avatars, who must put his childhood ways aside and stop the Fire Nation from enslaving the Water, Earth and Air nations.
Apartment building superintendent Cleveland Heep rescues what he thinks is a young woman from the pool he maintains. When he discovers that she is actually a character from a bedtime story who is trying to make the journey back to her home, he works with his tenants to protect his new friend from the creatures that are determined to keep her in our world.