Overworked Section Chief Sayuri Umemiya, unable to perform due to stress-induced impotence, orders her subordinate Enomoto to take her husband's place and sleep with her wife, Sayuri. Filming everything, she instructs her underling to perform increasingly intense acts to relieve her pent-up stress. She demands extreme bondage, vibrator torture, and hardcore BDSM, pushing the limits with each command. Hidden within these acts is a special memory a husband leaves for his wife. Though she resists, her mature body instinctively responds. These days filled with overwhelming pleasure leave a lasting mark on her heart.