Raditz, Goku's brother comes to Earth to evaluate Goku's work on Earth. He arrives and notices Earth is perfectly intact, and asks why Goku isn't doing his job and conversing with humans instead? (BTW this is one year late) Goku doesn't know what he is talking about, until Raditz explains his heritage. Since Goku has amnesia, he doesn't know a thing of his nature and race and what his intentions were supposed to be. Raditz tells him that Goku was a space soldier who worked for a tyrant named Furiza. Raditz explained to Goku that he was part of one of the most strongest races in the world, the saiyans. Goku is very shocked, and notices Gohan has a tail, which indicates he is a saiyan also. Raditz invites Goku to destroy Earth, Goku refuses, so Raditz blackmails Goku and grabs Gohan. He says if he doesn't begin to destroy these humans, Raditz will take Gohan. Raditz is too strong so Goku sacrifices himself to kill Raditz. Goku is transported to SnakeWay, destined to reach King Kaiouh, Martial Arts Master. He approaches that and reaches the planet after a little misadventures. Goku receives his training, whilst Earth's defenders: Piccolo, Gohan, CHaoutzu, Tien, Yamcha and Krillin fight Vegeta and Nappa who came to Earth in search for the dragonballs. Knowing Piccolo is too prominent to kill, they decide not to kill him. The saiyans use their Saibamen aliens to eliminate Yamcha who was self-destructed. By this time Goku was on his way to Earth after being revived al;ready by the dragonballs. With all the Saibamen dead, Nappa steps in and the all-powerful saiyan eliminates CHaoutzu, followed by Tien followed by Piccolo who nobly sacrificed himself to save Goku's son, Gohan. When Nappa confronts Gohan and Krillin, Goku arrives and defeats Nappa with his new skills from his training. Vegeta finishes off Nappa, finding him useless, and Goku and Vegeta start off the battle of the century. It ends up as a stalemate, no one winning, as Vegeta flees Earth because of his injuries against Goku...