A detective investigates a forgery ring in historical Korea. In the 19th year of Jeonjo’s reign, Kim Min, Joseon’s top detective, who used to be a King’s secret messenger, has been banished to a remote island for some unclear reasons. The only visitors are his old partner, Seo-pil and a young girl, who comes every day to ask him to find her younger sibling. In the meantime, Kim Min happens to hear a rumor that bogus silver bars have been being distributed, which awakens his dormant traits as a detective. Hisako, a beautiful, mysterious woman with her identity unknown, continuously interferes the investigation conducted by this excellent pair of detectives.

When a series of murders occur in Kanghwa Island, Detective K and his partner are once again called upon to solve the case. Along the way, he teams up with a beautiful woman with amnesia and together they discover Vampire bite marks on all the bodies. As they investigate further, they realize that the woman is somehow closely connected to the deaths.