In this episode Radditz arrivies on earth looking to see if Kakarot (Goku) has completed his mission to eliminate the inhabitants on earth. Realizing he hasn't he goes searching for him. Piccolo, terrified of Radditz trememndous power faces him, But just as Radditz was going to kill him Radditz sensed Goku's power and went after him. As Radditz arrived on the Kame house he took out Krilin with a swipe from his tail. The Radditz tells Goku about the uistory of the saiyans who eliminate inhabitants off of prime planets and then sell them. Then Radditz told Goku that Goku was Radditz's younger brother.