The Penalty Is Pinball

Pilaf releases sleeping gas inside the chamber, which knocks everyone out. Mai goes in and steals the Four-Star Ball from Goku while he's sleeping. When they wake up, they realize the ball has been stolen, and begin to run through the hallways. Pilaf sends giant pinballs rolling after them. Just when one of the balls has them cornered, it suddenly backs off, and a wall comes down again. They are trapped in the same room as before. Goku tries to use a Kamehame-Ha to blast away the wall, but only manages to open up a small hole that leads outside, where Pilaf is summoning Shenron. Puar and Oolong turn into bats and fly through the hole to try to steal one of the balls. But before they can get close enough, a dragon appears.