Junko, who wishes to engage in SM play but is too timid to wishes to find a convenient slave. Appearing before her is Yamada Ichirou, an alien who wants to examine how earthlings have sex. Due to his strong vitality that is on par with a cockroach, his injuries are healed in an instant. Though it appears Junko has finally found a convenient slave with which to make her queen debut, there are many troubles in store...