Aya is unsatisfied with her sex life with her husband, and after reaching her limit, she begins meeting people through dating sites. However, she is discovered by her live-in brothers-in-law, who also happen to be using the same site. From that moment of humiliation, she falls completely into their control. Her masochistic nature exposed, Aya loses any ability to resist the two brothers-in-law. As six months pass, she fully transforms into their slave. The intense shame, the pleasure of domination, and the overwhelming sense of helplessness she experiences throughout this process leave a deep impact.