Mami lives in a rundown apartment with her boyfriend, who is aspiring to be a comedian. They don't have much money, but they're happy together. To get through the cold winter, they press together to keep each other warm, and before long, they're in heat. They're immersed in melting sex, and their bodies gradually start to heat up. The fire never goes out, and the two, who were once frozen, continue to indulge in pleasure, covered in sweat...