The Suehiro couple want children but can't have them, so they try some dubious methods to get pregnant as a last resort. One day, when they are still depressed because they still can't have children, they meet a strange fortune teller. After drinking the tea the man offers them, the couple's bodies suddenly switch. Although they are confused, the couple start having sex while still swapping bodies in order to get pregnant. The couple become addicted to this unknown pleasure that is different from anything they've ever experienced before, but what will happen...?