Heo Jung-eun

After trying to cover up a car accident that left a man dead, a crooked homicide detective is stalked by a mysterious man claiming to have witnessed the event.

A woman's child is kidnapped and killed after paying the ransom. 15 years later, a mysterious figure is seen visiting the site of killing and another kidnapping occurs using the same methods. The woman teams up with a detective to catch the killer once and for all.