Despite her small stature and slender build, Riri is a strong and capable leader who directs a group of men on site. She excels as a site supervisor in the demolition industry, earning the respect of the workers. Takuto joins her company as a part-time employee. One day, Riri and Takuto are caught in a sudden downpour on their way back from a site inspection, and their car breaks down, leaving them stranded. They have no choice but to take refuge in the mountain cabin they had visited during the inspection, waiting for rescue. The night is cold...