This saga starts out finally showing some comedy like Roshi reading nasty magazines, and vegita wearing pink. To everyone’s surprise Freeza comes back to earth in robot form with King Cold for revenge but a saiyan warrior with a sword shows up and goes ssj, he kills them both with one blow each and then destroys the space ship. Goku comes back and the warrior explains he is from the future and his name is Trunks, he also says he is Bulma and Vegeta's son. He explains Goku will die in 3 years from heart disease so he gives him antidote. He also said in 3 years a group of powerful androids would come and kill everyone so train hard and he will be back then. So he leaves and the Z team starts to train for the androids.