What's happening?

Dragon Ball Z: 4x30

Last Ditch Effort

Vegeta, Trunks, Tien, and Piccolo realize a grim truth: unless they can increase their powers quickly, they’ll have no chance against the androids. In a drastic move, Piccolo flies to Kami’s Lookout and makes a most unexpected proposal!

Dragon Ball Z: Season 4 Episode 30
Dragon Ball Z: Season 4 Episode 30
Apr. 29, 1992