In the 1980s, strange phenomena occurred frequently in Dragon City. Reservoir murders and strange things in mountain villages were staged one after another. Superstitious rumors of "dragon veins causing trouble" and "ghosts and gods seeking lives" became more and more popular, becoming a haze hanging over the small town and becoming the layers of disguise behind the murders.
Young police detective Chen Weimin and veteran detective Lao Zhou are not afraid of rumors and criticism. They do not believe in ghosts and gods. They swear by their police badges and use evidence as their blades. They traveled through the dangerous areas of Longshan, checked old documents for more than ten years, peeled off clues from strange scene traces, uncovered the mystery created by the murderer through superstition, and found out the real murderer hiding behind the rumors.
When the coat of superstition is torn to pieces and the dust-laden truth comes to light, the police detectives in Longcheng use justice and perseverance to dispel the haze and let the bright world return to this land.