Miyu joins her boyfriend and his friends on a snowboarding trip, only to become trapped in a mountain cabin with one of the friends during a fierce blizzard. To avoid getting sick in their wet clothes, they strip and press their chilled bodies together for warmth. She rejects his kiss at first, but guilt over causing the situation leads her to allow sex. When his bare cock enters her, she feels guilty yet cannot make her body resist. He repeatedly gets hard and takes her again, driving her through relentless orgasms; each time she insists it must remain secret, her heart and body open further. Unable to sleep while worrying about her boyfriend, she spends the night drowning her cold and fear in repeated cheating sex and creampies.