Dragon Ball Z Side Story: Plan to Eradicate the Saiyans

Dr. Raichi is one of the few survivors of the Tuffles, a race that once inhabited Planet Plant prior to the arrival of the Saiyans. The Saiyans massacred the Tuffles in their entirety, seized their technology, and conquered the planet, renaming it Planet Vegeta in honor of their king. Raichi escaped in a capsule and found refuge on the Dark Planet, a world at the end of the universe. His sole wish is to eradicate the last remaining Saiyans.