Nozomi Hazuki was loved by her husband, Kouta. Every day was peaceful and happy. However, one day, her husband suddenly confessed: "I want you to have sex with someone else." Shocked, yet wanting her husband's happiness, she chose to engage with her superior. Though she outwardly resists, her body betrays her desire. Her husband watches hidden camera footage of her, overcome with pleasure. Then, the out-of-control men uncover her lewd true nature and begin to train her.