Ten years have passed since Goku left his friends and family to perfect his skills. But Goku soon finds himself powerless against the mystical power of the Dragon Balls and an accidental wish made by the cunning Emperor Pilaf. The wish: for Goku to become a child again! Goku, along with Trunks and his granddaughter Pan, sets off in search of the mysterious Black Star Dragon Balls, heading to the far corners of space. But these Dragon Balls have a fatal secret: if they are not gathered within a year, the Earth will be destroyed.