Nao, a married woman, has heard rumors that there have been many thieves stealing only bicycle saddles in her neighborhood. When she tells her husband about it, Nao tells her to be careful because she often rides her bike. Nao is optimistic that this has nothing to do with her, but in fact, the saddle man has been keeping an eye on her... One day, when she is about to go shopping, she notices that her bicycle saddle has been stolen. Nao is upset when she sees this, but a man holding the saddle in one hand approaches her and says that he has returned it...