Married woman Itsuki Azuma is seduced by her former classmates Tohara and Hosaka after a reunion. Yielding to Hosaka's nighttime advances, she unleashes her pent-up work stress through intense aggressive sex, leading to passionate lovemaking. When her affair with Tohara interferes with her job, her overheated body craves release, driving her to indulge in masturbation. In her masochistic fantasies, she is tormented with a vibrator and a bullet, screaming in ecstasy as she squirts and loses control of her bladder.