Hitomi Honda married an older man, believing she had finally found everyday happiness. But her affair with a man named Matsuda, who awakened her pleasure as a masochist, continued unchanged. One day, she received news from the hospital about her husband's terminal diagnosis. While hiding the truth from him, Hitomi continues to act cheerful as always. Yet, tormented by guilt and inner conflict, she begins a new life of surrendering to other men and indulging in forbidden pleasure. Her beloved husband, unaware of her true self, slowly resigns himself to death. In response, Hitomi chooses to expose herself as his slave.