After getting married, Nana, a wife who moved into her husband Koji's parents' home, had one worry: her father-in-law's opinion was absolute at home. At first, nothing happened, but her father-in-law gradually revealed his sinister true nature and began to blame Nana for the smallest of things. Her husband gently comforted the hurt Nana and they made love in the living room, but her father-in-law witnessed them. The next day, her father-in-law took Nana to the basement of the house and locked her in, saying, "I'll teach you a lesson, a promiscuous wife who doesn't care about what others think."