In the extreme situation of being stranded on a freezing snowy mountain, Morita Miyu is alone with her boyfriend's best friend, leaning against him in search of warmth. As if to dispel the fear of death, the warmth of their touching skin gradually turns into forbidden desire. Ironically, even as she feels guilty about her boyfriend, it is another man's penis that warms her frozen body to the core. The contrast between the cold outside air and the burning passion inside her is stark. Trembling with a sense of guilt, she cannot resist the pleasure of being thrust into her again and again, and she moans wildly in the silence of the snowy mountain.