Ena is a serious, reserved office worker who has secretly been horny for years. Though inexperienced with men in everyday life, she masturbates at home while enjoying erotic manga and anime. One day, every sexual fantasy, dirty word, or wave of pleasure begins triggering an uncontrollable, dazed orgasm face. Genuinely worried, she visits a hospital, where extreme climax-based shock therapy is used to overload both her brain and pussy.