Bulma's search for six more Dragon Balls leads her to a remote valley and to Son Goku, who is in possession of one of the balls. Their relationship gets off to a rocky start, but after Goku saves Bulma's life, the two join forces in search of the remaining five Dragon Balls. They had better take care, for an evil force - Pilaf - also seeks the Dragon Balls.

Goku and Bulma arrive at a certain village, where the fifth Dragon Ball is located. Goku is mistaken for the freely shape-shifting monster Oolong, who raids the village, and is hit by a sudden attack from one of the villagers! Bulma makes a promise with the villagers that “We’ll take care of Oolong in exchange for the Six-Star Ball that’s in this village”. Goku disguises himself as one of the village girls, and the captured monster’s true identity turns out to be a piglet, of all things!! Bulma and Goku obtain the Six-Star Ball. Taking in Oolong as their ally, they continue their adventure to find the remaining Dragon Balls!!