Nozomi Shimazaki loved her husband Kota. Every day was happy. Then one day, she received a shocking confession from her husband. "I want you to have sex with other people." For the sake of her beloved husband, she crosses the line with her husband's boss. Although she stubbornly refuses, her womanly body reacts deep inside. Staring at the secretly filmed footage, her husband reaches the highest ecstasy. Then, the out-of-control men try to expose Nozomi's lewd nature through pleasure training.