Noriko (Mori Nanako) had just moved into a newly built apartment with her husband, Nobuo, enjoying a happy newlywed life. However, one day, she is violently raped by the building's caretaker, Kajiwara, and the owner, Touma. After this incident, she is forced into a life of servitude, becoming a sex slave to the other residents of the apartment complex. Her suffering and the drastic shift in her circumstances mark a major turning point in the story.