Kaho, a married tutor who used to teach at a cram school before getting married and starting a family, is back at it to help make ends meet. Her husband is a serious workaholic, but their sex life is bland and unsatisfying, leading him to seek extramarital affairs. One day, a student shows her his phone, revealing photos of his infidelity, leaving Kaho shaken. From then on, a relentless barrage of sexual harassment and coercion begins. To make matters worse, her son's friends and even his father start treating her like a sex slave.
