Having grown up in an orphanage, Mao always felt a sense of inferiority, but after meeting and marrying her husband, she was living a happy married life. However, following the sudden death of her mother-in-law, the couple began living with her father-in-law. One day, the father-in-law accidentally discovered that Mao had worked in the sex industry in the past, and he began to blackmail her with this information. "Mao-san, you wouldn't want this to get out, would you?" Taking hemp rope from the cupboard, the father-in-law began his training of Mao...