42-year-old married woman Satsuki maintains a harmonious relationship with her husband but feels sexually unsatisfied. Taking advantage of her husband's business trip, she embarks on a forbidden adulterous hot spring getaway with a younger lover. At the inn, one man after another appears, and under command, she ends up having sex with other men right in front of her lover. Mentally and physically dominated, she experiences overwhelming fulfillment of her deepest desires.