Airtime introduces the player to the Air Walkers, an ancient tribe that lives in a city above the clouds. They have lived there since an evil demon chased them away from the ground. The hero of this game is a young boy who defies the warnings of the elders and takes a single peak at the world below. This alerts the demon to the Air Walkers' hiding place. When the demon captures the entire tribe, the boy has to come down from the clouds to save his people.