Newlywed Shira Hana Ko struggles with her husband's erectile dysfunction while desperately wanting a child. One day, burdened by guilt over his condition, he confesses to her about an underground service called "Cuckold Service." Initially skeptical, she gradually becomes intrigued when her husband catches her in the act of being taken by another man. As she awakens to the pleasure of NTR sex, the lustful wife begins passionately chasing multiple intense orgasms with several thick cocks, fully embracing her new desires.