Kyoko-san, a married woman who applied due to sexlessness in her marriage, ends up spending the night at a college student's house after being given just one condom. They quickly have sex using it, but unable to satisfy himself with just one ejaculation, the man convinces her to have sex without a condom. While they pretend the second encounter never happened, the intense pleasure of raw sex proves too much to resist, and they find themselves seeking each other out again as their departure time approaches.