A little orphan girl named Wisp is taken by an unknown force to the Colorless World. She must find the Sphere of Light, but upon doing so, she befriends a sprite, Twink, and a majestic white horse known as Starlite. She rescues the seven Color Kids (one for each color of the rainbow) and finds the Color Belt, which is the tool she needs to bring color to the land. After using it to defeat the King of Shadows (also known as the Evil Force and the Dark One), an evil hooded being with twitchy fingers, the unknown force renames Wisp as Rainbow Brite. She and the Color Kids (and their helpers, the Sprites) live in Rainbow Land and are in charge of all the colors on Earth.