Following the annihilation of his Tsufurujin kin by the Saiyans, Dr. Raichii emerges as the sole survivor, harboring a vengeful vendetta against Goku and Vegeta, the last Saiyans standing. With lethal destron gas poised to obliterate Earth, the Z warriors race against time, left with a mere 72 hours to locate and thwart Dr. Raichii's nefarious plans.