"Zak is ten years old. He lives with Grandpa. One day, Grandpa falls gravely ill. When Zak goes to seek help, he meets a wizard. Strangely, the wizard already knows that Grandpa is sick. He offers to cure Grandpa, and, in return, Zak must go on a quest. He must find ten magic gems. Zak sets off with his friend, Finn. How will they find the magic gems? Will they find them in time to save Grandpa?"--Publisher's description.