Sayami receives a marriage proposal from her boyfriend, Hideyuki, and overjoyed, she heads out to visit his father. On her way home, she is suddenly kidnapped and taken to a secret club, where she is assaulted by multiple men. Hideyuki, worried about Sayami's disappearance, searches desperately but cannot find her, consumed by anxiety and helplessness. Meanwhile, Hideyuki's father, Daisuke, learns of the secret club's existence from his subordinate Kuramochi, unknowingly embracing Sayami who is now under his control. Later, when Daisuke witnesses Sayami and Hideyuki appearing together at the secret club, he finally realizes the horrifying truth—that he has raped his own son's fiancée. The shock is overwhelming.