Gohan and Goku arrive at Kame house to meet Master Roshi, Krillin, Bulma and Mr. Turtle. Their celebration ended when Goku's older brother, Raditz, takes Gohan away. Goku and Piccolo form an alliance to save Gohan and defeat Raditz. He is too powerful for them to beat. Gohan does not want to see his father get hurt any further. This causes him to headbutt Raditz. The headbutt damages Raditz's armor but Gohan is knocked unconscious.