Miki, a married woman in her fifth year of marriage, lives happily with her husband. One day, Yohei, a former colleague from the convenience store where Miki used to work as a part-timer, visits her. He says he brought a necklace that Miki lost while working. For Yohei, who had been growing more attached to Miki even after she left the workplace, this is a once-in-a-lifetime opportunity.
