Fusae, a married woman, has an impulsive sexual encounter with an acquaintance named Takeuchi. Her husband, Kenichi, returns home to find them together; stunned, he flees the room. Meanwhile, Rie—who is hitchhiking—gets into a car with a suspicious man and nearly becomes the victim of a rape, but is saved in the nick of time by Kenichi. Through a strange turn of events, the two end up spending the night together…