The world is filled with violence, and many crimes are so hideous that we blame insanity, drugs, and even plain and simple hatred as the force behind many atrocities. However, what if demons, ghosts, and possession were not fantasy? What if they are real? After all, if we believe in God why can we not believe in the spirit world? The Ghost Detective is a Korean thriller set in a world where ghosts and other paranormal phenomena are the cause behind many mysterious and horrible events. In this world, the private detective Le Da Il (Choi Daniel) and his assistant Jung Yeo Wool (Park Eun Bin), unravel clues, follow leads, and find spiritual culprits that responsible for some of the worst crimes unsolvable by standard police work.