Natsume, who went to deliver something to her husband's workplace, dropped her keys there. Her boss picked them up and made her subordinate, Natsume's husband, work overtime, and broke into her house, tying up the dozing Natsume and sexually assaulting her. Natsume, petrified and terrified, gradually gave in to his orders... She was toyed with in the corner of her husband's office and was violently raped at the end...