The evil Dr. Kochin uses the dragon balls to resurrect his mentor, Dr. Wheelo, in an effort to take over the world. Dr. Wheelo, his body having been destroyed by the avalanche that killed him fifty years before, desires the body of the strongest fighter in the world as his new vessel. Believing Roshi to be the world's strongest warrior, Dr. Kochin abducts Bulma and forces Roshi to surrender himself to save her. When Goku hears of their abduction, he goes to their rescue. Written by page8701

The death of Dr. Gero at the hands of Androids 17 and 18 prompts the activation of Androids 13, 14, and 15. They try to kill Goku, who fights them with the help of Trunks, Piccolo, Vegeta, Krillin, and Gohan.