Mio Kimijima plays Saki, a modest and pure married woman living a peaceful life with her husband. One day, a violent intruder suddenly breaks in and begins terrorizing her, threatening her body and safety. Unable to tell her husband, Saki endures repeated assaults amid intense inner turmoil, gradually becoming aware of physical and emotional changes within herself. As the abuse continues, she is forced to confront the harsh reality of her situation.