An ex-criminal, whom Jae-wook had arrested during his days as an agent, tells him that a woman was murdered in his hometown, a small island near Incheon. When the detectives go to the island, they discover that the residents believe that a vampire lives in the island and kills a woman whenever anyone tries to investigate on the murders happening in the village. Meanwhile, K tells them that one of the doctors involved in Project D was from the same island.
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