Married woman Nao hears about a thief stealing bicycle saddles in the neighborhood and mentions it to her husband. Since Nao often rides her bike, her husband urges her to be careful. She thinks it won't happen to her—until one day, as she prepares to go shopping, she discovers her own saddle has been stolen. Shocked, she suddenly sees a man appear before her, holding her saddle in one hand, claiming he's retrieved it for her.