After marriage, the devoted housewife "Tsubaki" never once entertained the thought of infidelity. However, living with her dull and unexciting husband, her physical desires went unfulfilled, leaving her increasingly dissatisfied with daily life. One night, while tending to her drunken husband, she meets his young subordinate. The man is passionate, virile, and possesses a well-toned body brimming with raw sexual charisma. Overwhelmed by pleasures she's never known before, Tsubaki gives in and commits a sin. Her affair with her husband's underling shakes her mind and body to the core, causing her to abandon her former chastity and become possessed by newfound lust. The routine life of a married woman is shattered and liberated by another man's cock, filling her with ecstatic, trembling orgasms.