Though her husband is a status-conscious, domineering businessman in public, at night they engage in a completely opposite master-slave relationship where she dominates him sexually. One day, when her husband brings a subordinate home, Nao takes control of the young man and begins sexually dominating him. She calls her husband and the subordinate into the kitchen, reverses their power dynamic, and deliberately brings her husband to his knees with handjob and blowjob until he's mentally broken. While her husband is away on a business trip, she continues her erotic torture and training of his subordinate—teasing him provocatively, giving him intense vibrator sessions, and having creampie sex with him repeatedly. Her relentless sexual domination of her husband's underlings continues, portraying the lustful desires of a married woman who, in service to her husband, becomes an aggressive dominatrix over his male staff.