Dragon Ball Z - Season 2 Episode 7 -

Back on Earth, Gokus is sufferning from an illness, but a magic Senzu bean offers a full recover. When Goku hears about the trouble on Namek, he jumps into his old spaceship, rebuilt by Bulma's father Dr. Briefs. On Namek, Krillin and Gohan witness Frieza's power and learn that he has collected four Dragon Balls!