Goku finds Gyū-Maō's daughter, Chi-Chi, and goes with her to Kame-Sen'nin's house. Kame-Sen'nin agrees to put out the fire and uses a powerful energy blast called Kamehameha to do it, and thus find the sixth Dragon Ball, despite blowing away the castle. Later, soldiers of Pilaf steal Bulma's Dragon Balls. Yamcha helps them to enter Pilaf's castle but they are trapped in a room. With the seven Dragon Balls reunited, Pilaf summons the dragon Shenlong who would grant his wish of conquering the world, but Oolong interrupts him by wishing for a girl's panties, making the Balls and the dragon disappear. Angered, Pilaf traps Goku and his friends in an unbreakable room, but Goku looks at the full moon, mysteriously causing him to transform into a Great Ape that destroys the castle. Yamcha and Pu'ar manage to cut his tail off and Goku returns to being a child without knowing what happened. Goku separates from his friends and goes to train with Kame-Sen'nin, who tells him that he must bring a g