After her husband's company goes bankrupt, leaving them with massive debt, Aika begins working at a massage parlor owned by the loan sharks' affiliated corporation. Exploiting her deep love for her husband, she is lured into a cunning trap. What started as an ordinary massage job gradually turns into increasingly extreme demands. Unable to refuse, she is drawn into erotic acts. Repeating to herself, "If it's for him..." the married woman's heart slowly twists with inner conflict. Torn between desire and guilt, just how far will she fall?