Gu Chen, a former elite criminal police officer, is now a private detective in the foggy city. He has a calm and vicious tongue and specializes in investigating mysterious cases. Lin Yue, the deputy captain of criminal investigation, is stubborn and courageous, and has the power of destiny. The two are forced to cooperate due to a murder in a bar. There are strange blood symbols left at the scene, which lead to mysterious sects and serial conspiracies. The old case remains unsolved, a new situation has been established, the police has a protective umbrella, and a cult is watching in the dark. Gu Chen broke the situation with his wisdom, and Lin Yue opened the way with his courage. They peeled off the cocoons, from ghost alleys to ancient houses, from the dark web to ghost trains, and uncovered layers of bloody contracts. At the end of the truth, there is a showdown of fate and the rebirth of justice. Exploring mysterious cases, slaying evil spirits, but faith will never die.
