Nanami appears to be the perfect wife, sharing a deep bond with her husband, Shuuichi. However, her life becomes a nightmare when her apartment caretaker, Kamata, blackmails her with compromising recordings. Forced into a cycle of abuse and coerced intimacy, Nanami struggles with overwhelming guilt and shame while desperately trying to maintain her marriage and her love for her husband.
Nanami maintains a facade of a blissful marriage with Shuichi, but she harbors dark secrets about her past enslavement by a man named Kamata. Though she was rescued by Hino-kun, she has entered into a guilt-ridden affair with him as a form of repayment for his help. As their fourth wedding anniversary arrives, Nanami struggles with the weight of her betrayals while celebrating a pregnancy she hopes will secure her future with her husband.
Driven by jealousy, Shuuichi seeks solace in a professional sex service, leaving his wife Nanami feeling neglected and betrayed. Heartbroken by his infidelity, Nanami finds comfort in the arms of their neighbor, Shinagawa, sparking a passionate secret affair. As Nanami finds the emotional and physical fulfillment she craves with Shinagawa, she continues to maintain a facade of marital bliss, hiding a deep and dangerous double life.