Lesson Number One

Locked in the final battle with Earth's Saiyan attackers, Goku begins to demonstrate the skills and training he received from King Kai beginning with a devastating attack on Nappa. But when Nappa concedes defeat under the command of Vegeta, he turns on Gohan and Krillin only to be stopped by Goku's Kaio-Ken attack. Broken and defeated, Nappa is finally vanquished by Vegeta leaving Goku to face him alone.