In the context of modern cities, the shadow of crime hides under the appearance of prosperity. The Serious Crime Team of the Nanlin City Public Security Bureau uses "physical evidence chain tracking", "psychological profiling" and "digital trace inspection" as its core crime-solving methods to solve serial murders and old unsolved cases. The story focuses on the cooperation between the leader of the serious crime team and the expert in criminal psychology, searching for the truth in the bloody mystery, and growing feelings in the bond of life and death.
