Tired of humanity's destructive nature, Zeus, the ruler of the gods, seeks a nonviolent solution to end mankind. Entrusting the mission to Priapus A. Tarou, the god of fertility, Zeus tasks him with a unique plan. By using his seductive powers and divine tools, Priapus aims to make every man on Earth gay, leading to a decline in human reproduction and, eventually, the extinction of the human race. Through education and charm, Priapus sets out to introduce mortal men to a different form of intimacy, steering them away from their traditional ways.