Worried and lonely after her husband Jiro is hospitalized due to stomach spasms, married woman Nao finds herself drawn to her neighbor, Oshima. Pretending to comfort her, he soon forcefully pins her down. Under Oshima's skillful touch, Nao forgets about her husband in the hospital as the sensation of a cock awakens her deep female instincts. With her husband away, she begins indulging in the strong cocks of neighboring men, one after another.