In her fourth year of marriage, an ordinary housewife finds her relationship with her husband growing cold. Seeking to satisfy her suppressed desires, she begins an affair with another man. Unable to fulfill her longing with her husband, she turns to a secret lover to relieve her frustrations. Though initially hesitant about his rough demands, she gradually surrenders herself, releasing her pent-up emotions through submission. Her deeply hidden masochistic side emerges as she becomes consumed by intense pleasure, ascending toward ultimate ecstasy in pursuit of carnal bliss.