A series of murders and kidnappings that took place 30 years ago in Aridong comes back to haunt people as the criminal begins to strike again. Real estate owner Shim Duk Soo finds one of his tenants hanged to death in his apartment, and while police dismiss it as a simple suicide, former detective Park Pyung Dal convinces him that the case is too similar to those 30 years prior to be a coincidence. The two consequently teams up to track down the killer.
