Your planet was being overtaken by Frieza and his men. He sees you and your tail and realizes you’re a Saiyan. Your mother drags you into a hidden escape pod and presses a button on it. You are shot into the air screaming and trying to get out as you watch Frieza fight your mother. After a long space journey, your pod crash lands on Earth, right in front of Goku’s house, disrupting his training with his sons and Piccolo.