A 21-year-old college girl, Mako, is invited on an overnight trip with a handsome male actor. Having just broken up with her boyfriend, she's cheerful and sweet, and admits she's been following the actor on social media. She agrees to participate in a game where losing means having sex. Upon arriving at the destination, she immediately enjoys an adventure course without underwear. Later, they relax together at a mixed-gender hot spring. On their way to the hotel, the game result is revealed—she lost, leading to sex. Initially shy, she gradually relaxes and by the end, she herself pleads, "Inside me..." Late at night, when the crew is gone, she actively approaches the actor again, initiating creampie sex. They spend the time like a loving couple on a private date, deeply affectionate and intimate.