Popular cabaret hostess Nao Wakana marries and begins living with her impotent husband and his elderly, bedridden father. Her father-in-law is a strict man who despises the nightlife industry, and she keeps her past as a hostess a complete secret from him. One day, he discovers the truth about her former job and flies into a rage, verbally abusing her and subjecting her to sexual harassment. Soon, he begins forcing her into a physical relationship. Despite being married, Nao finds herself increasingly drawn to her father-in-law's powerful, virile cock—a stark contrast to her impotent husband—and gradually succumbs to his dominating allure.