In 1808, an imperial investigator arrives on an idyllic island to investigate a series of grisly murders. The locals believe that a ghost is responsible, taking revenge for a wrongful execution seven years ago. But the investigator suspects that something else may be behind it all.
A serial killer is burning away the flesh of his victims with acid, leaving only the bones behind. The police turn to Hyun-min, a former forensic sculptor adept in reconstructing faces by examining and interpreting skulls. With the victim's bones in his house, Hyun-min's daughter begins to experience disturbing visions. As he races against time to find the answers and save his daughter, the deadly truth behind these victims reveals a sinister conspiracy that threatens everyone involved.
A likeable, married high school teacher spirals out of control when a student in his class begins unintentionally reminding him of his doomed first love, which ended 17 years earlier.