Sachiko, a housewife living with her husband who struggles with ED. Her days are filled with loneliness due to the lack of intimacy and sexual activity in their marriage, leading her to masturbate daily. One day, Sachiko goes alone to a bar in the red-light district to distract herself and ends up being picked up by a black man, leading to a physical relationship. Hooked on the pleasure after so long, she continues the affair multiple times. However, her husband notices and plans a terrifying revenge…
