Kuriyama Rio plays a faithful wife who is offered to her ruthless boss, who has discovered a weakness in her husband's work. She is "loaned" for a limited period of one month. At first, she trembles with fear, but her body begins to ache from the core as her boss's cunning and forceful caresses make her gradually sink into the pleasure of betrayal. As her husband watches, she is immoral, having another man's seed poured deep into her uterus. This brutal film depicts how her pride is smeared by corruption and semen, and she is disintegrated into a female who is mad with lust.