Salinjaui gieokbeob 2017 Former serial killer Byung su gets diagnosed with Alzheimers The doctor tells him that its due to the aftereffects from a traffic accident 17 years ago the same accident that stopped him from his killings and allowed him to live a normal life with his dear daughter So when a series of murders occurs near his town, Byung su gets worried whether the killings are his doing during his memory lapses But then he comes across Tae ju and instinctively realizes that he is the serial killer He reports this to the police, only to learn that Tae ju is one Byung su tries to find firm evidence that Tae ju is a psychopath, but only raises Tae jus interest in him and his daughter And now with his memory slipping, Byung su must find a way to protect his daughter from Tae ju