Ayame Ichinose lived peacefully every day with her husband, but recently his work became increasingly busy, leaving little time for conversation at night, and she began to feel a growing distance between them. Feeling anxious about this change, Ayame decided to confide in her father-in-law. However, from that day on, his behavior turned strange and gradually shifted. One day, he suddenly attacked her in the bathroom. Forced into submission, Ayame was overwhelmed by her father-in-law's desires and eventually made to go shopping without underwear. As his true nature emerged, Ayame found herself helplessly drawn into the escalating situation.