Goku is a powerful warrior who protects the Earth from an endless stream of rogues bent on dominating the universe and controlling the mystical objects known as Dragon Balls. In order to fulfill his adoptive grandfather's dying request, Goku seeks to find the great master Roshi and gather all seven Dragon Balls, of which he has one. He must get all seven in order to prevent the evil Lord Piccolo from succeeding in his desire to use the Dragon Balls to take over the world.