100 years after the legendary Goku defeated Baby Vegeta,the story of Goku's descendant, Goku Jr. begins.Goku Jr. is a boy with a warm personality but is teased by his classmatesfor being a coward. He believes himself to be weak and can never find the strength to stand up to anyone. But when his loving but strict grandmother Pan becomes ill, he remembers Pan's story about the magical dragon ball and decides to go on a journeyin search of the dragon ball which he believes will cure her.