The Darkest Day
The Saiyans Vegeta and Nappa defiantly announce their arrival on Earth with the complete destruction of East City. Sensing their power, Goku, Gohan and Krillin prepare for the worst and meet the Saiyans face to face where Piccolo learns of his origins on the planet Namek. Yajirobe also learns of the Saiyans arrival but uses it merely as an occasion for profit. Our heroes are left facing on onslaught of sprouted Saibamen under the grinning command of Vegetta and Nappa
Aired 11/10/1989EP 22 - The Darkest Day
Dragon Ball Z
Goku is back with his new son, Gohan, but just when things are getting settled down, the adventures continue. Whether he is facing enemies such as Freeza, Cell, or Boo, Goku is proven to be an elite of his own and discovers his race, Saiyan. He meets many new people, gaining allies as well as enemies, as he still finds time to raise a family and be the happy-go-lucky Saiyan he is.
(Source: Anime News Network)