Ten years after leaving friends and family to hone his skills, Goku has become helpless against the mystic power of the Dragon Balls when a wish made by devious Emperor Pilaf -- that Goku become a child -- comes true. Despite the setback, Goku teams with his granddaughter, Pan, and Capsule Corp. President Trunks to go to outer space to find the missing Black Star Dragon Balls. Unknown to Goku and his team, the balls have a secret: If they are not collected within a year, Earth will be destroyed.