The episode begins with a flashback of the destruction of Planet Vegeta at Frieza's hand, and Goku's childhood, as depicted in the original Dragon Ball. 5 years have passed since the fight with Piccolo Jr. at the World Martial Arts Tournament, and he has since married Chi-Chi and now has a son. Gohan, Goku's four-year-old son, is missing. Goku heads out on his flying cloud to search for him and eventually finds and retrieves him. Meanwhile, a farmer witnesses a spacecraft landing. A man emerges from the vessel and flies off to scout out a powerful life form he locates with the help of an aparatus on his eye. The life form, Piccolo, is nearly killed by the stranger, but this is averted when the man leaves to scout out a more powerful life form. The other strong life form is Goku who at Master Roshi's house presents his son to the host, Krillin, and Bulma. The stranger lands and speaks to Goku in a familiar manner.