One day, during a record-breaking heat wave, Yuki's air conditioner suddenly breaks down, and she calls everywhere to ask for repairs, but they are all full, leaving her at a loss as to what to do. Luckily, she remembers that her husband's uncle used to be an electrician, and is able to come over on short notice. The next day, her uncle, Jinbei, comes to visit her right away. Jinbei, who has not had a woman for a long time, becomes aroused by Yuki, whom he meets for the first time...