Joseon's top detective Kim Min attempts to track down those responsible for circulating massive amounts of counterfeit silver bullion in Joseon. He also tries to find the missing sibling of a young girl.

In 1782, King Jeong-jo of Joseon asks detective K to investigate a series of murders related to a case of corruption within the government.

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.