Waking up, Yua finds herself in an unfamiliar room, wearing only her underwear and a collar, her shock and confusion evident. Before her, her boyfriend is tied to a chair, clad only in his underwear. Suddenly, a monitor powers on, revealing a masked stranger on screen. He issues a cruel ultimatum: "Make your boyfriend cum within ten minutes. Succeed, and you'll both be freed. Fail, and..." The timer starts. Desperate, Yua tries everything—handjobs, blowjobs, titty fucks—using all her usual techniques. But as tension and anxiety mount, the situation spirals beyond control. How Yua handles the pressure becomes the focal point of this intense ordeal.