Exhausted by work, Yuki impulsively travels to a distant hot-spring inn where no one knows him. There he meets Mayuka, a married woman standing alone with a lonely air. They immediately connect, and with alcohol loosening their inhibitions, they end up together. Sweaty and consumed by desire, they devour each other’s bodies and drown in pleasure. Playing lovers for a fleeting moment, they forget everything and lose themselves in the thrill of adultery amid the rising steam.