A housewife named Akumu, living in an ordinary household, one day impulsively walks outside without underwear and feels a thrill and exhilaration that she would never experience in daily life. From that day on, Akumu's long-suppressed desires awaken. She indulges in sex with men in the vacant adjacent room. Her acts of betrayal against her husband stir up her lewd desires even more. Eventually, even this lifestyle becomes boring to Akumu, and she begins to fantasize about even more abnormal sex…
