The night before she marries Raka Han, her partner of seven years, financial analyst Hanara Kim gets messages from an unknown number claiming to be herself ten years from now, warning that someone will die if the wedding goes ahead. Nara marries him anyway, then finds a hidden folder about a fatal accident at the Han family factory twenty-two years ago, with her mother's name on the witness list. As the stranger from the mysterious photo enters her life, Nara must learn what her husband is hiding.