15 years ago Suh-jin (Kim Sung-Kyung), the daughter of Yoon Ha-kyung (Uhm Jung-hwa), was kidnapped and found dead at the ransom exchange spot while the kidnapper disappeared. With five days to go before the statute of limitations on the official police case expires an anonymous person leaves a flower by the site of the abduction. Detective Oh Chung-Ho (Kim Sang-Kyung), who continues to pursue the case against his boss’s orders, tracks down but then loses the stranger literally hours before the case expires. The next day another kidnapping almost identical to the first takes place. While the police investigate this new case Ha-kyung continues to search the kidnapper herself.