Disclaimer: I do NOT own Dragonball, Dragonballz, Or Dragonball GT. They are Copyright: Bird Studio/Shueisha, Toei Animation, Licensed by FUNimation® Productions, Ltd.
Dragonball:NEXT The New Story
Prologue
Over the years, the Z-Senshi fought many viscious battles, against unbelievable opponents, to protect Chikyuu-sei and the universe. Times were peaceful, until Majin Buu. Vegeta sacrificed his life in an attempt to kill Majin Buu. He almost succeeded. Trunks and Goten woke up from being knocked out by Vegeta just moments earlier. They were mad that he wouldn't let them fight, and went to the now remaining bits of Majin Buu. Wanting to prove how strong they were, they blasted the remaining bits of Majin Buu to nothingness. Piccolo, who was also there, quickly took care of Babidi. It was all over.
The Z-Senshi regroup at Dende's Lookout, and use the dragonballs to wish everyone back. Gokuh, Vegita, and everyone else that was killed by Majin Buu was resurrected. A few weeks later, Vegita wishes back a small part of the Saiya-Jin race to live on earth. He quickly makes it clear that Saiya-Jin are going to help protect the universe now. He had all resurrected Saiya-Jin attend a demonstration of the Z-Senshi powers. He explained that they only achieved them through good, and not evil. A few years have passed since then, the Saiya-Jin race now resides on earth, although there is still some discrimination against Saiya-Jin. The Z-Senshi still keep a regular training regiment, but none have yet to take any new students. The secrets of their training are a closely guarded secret and there are none on chikyuu as strong as they.
Many years later, Gokuh finds his next student...