Luke and his sister Elena are two orphans, living in a small house in the kingdom of Gross. They have two good friends - Mouse and Nicol. One day, while exploring a local cave, the four youths find a mysterious jewel. Later, they travel to the city of Goondocks, where they find a similar jewel - along with a note left to them by Luke's and Elena's parents. They learn that their parents belonged to an ancient race named Eternal Eyes - people who could control inanimate dolls called Mappets. Now the four heroes have to learn the power of controlling Mappets, and to stop a villain from resurrecting the Goddess of Destruction.