Husband and wife were struggling with a sexless marriage. The husband resolved to try harder, but couldn't get aroused. One day, he saw Minami choking as she took a frankfurter deep into her throat, and instantly felt intense excitement. He realized he desired to see his wife's face during deep throat, and discovered his cuckold fetish. Accepting his true desires, he asked another man to give his wife endless deep throating. A new relationship begins.