A former serial killer Byung-su gets diagnosed with Alzheimer’s and when a series of murders occur near his town, he worries whether the killings are his doings. Then, he comes across Tae-ju and realizes that he’s the killer. He reports this to the police, only to learn that Tae-ju is one. Byung-su tries to find evidence against Tae-ju, only to raise the young killer’s interest on him and his dear daughter.

Jang-woo had only his sister to live for until she is brutally murdered. During a ritual to send her spirit to heaven, he comes across a suspicious man, who manages to escape from the scene. He begins to suspect a local pharmacist and keeps an eye on him. Although Jang-woo is absolutely convinced that the pharmacist is the killer, no one believes him because the pharmacist is considered the kindest man in town. But he gets help from a possessed woman named Si-eun who foresees how people die. Their pursuit begins and Si-eun predicts yet another murder.