Dragon Ball Z Episode 49: The Prince Fights Back
Episode 49 of 291 of Dragon Ball Z, aired May 23, 1990, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Vegeta catches Dodoria in his search for Gohan and Krillin, and attacks. In an attempt to save his life, Dodoria reveals that Frieza was responsible for the destructino of the Saiyan home planet (also called Vegeta). Vegeta destroys Dodoria in return, and begins his own quest for the Dragon Balls. Meanwhile, Gohan and Krillin reunite with Bulma and learn that Goku will soon arrive on Namek.