Kyoka is a married woman living a modest married life with her husband. Kyoka's mother suffers from a serious illness, and the high medical expenses are putting a strain on the family finances. Meanwhile, her husband is suspected of fraud at work. Her husband's boss uses the suspicion to blackmail Kyoka and rapes her. From then on, Kyoka continues to be raped by her husband's boss, regardless of whether her husband is there or not...