Married woman Yuka, plagued by her easily orgasmic nature and resulting sexual frustration, meets young man Shunsuke, who suffers from the opposite problem—an inability to climax despite high libido. Their chance encounter leads to an illicit affair. Yuka reaches orgasm quickly, growing increasingly unable to be satisfied by her husband. Meanwhile, Shunsuke struggles to ejaculate, yet grows more driven by her responsiveness. Their contrasting physiologies fuel a tense, escalating relationship. The faster Yuka cums, the more intense Shunsuke's pace becomes, his relentless thrusting growing ever more forceful. This dangerous dynamic, born of their opposing bodies, spirals deeper—whether Yuka faints first or Shunsuke finally reaches climax is left for the viewer to decide.