Chase the murderer thousands of miles away just to bring justice to the world.
Detective Gu Yan's case-handling career started with a seemingly ordinary murder case, but unexpectedly involved a series of unsolved cases that have not been solved for more than ten years.
He immersed himself in the dangers of crimes in the corners of the city, the secrets of the mountains and forests, and the conspiracies of cross-border crimes.
There are no fancy words, only the most hard-core criminal investigation records; there is no procrastinating plot, only high-energy reversals of one case after another.
The ultimate battle between police and criminals is now going on!
Concept: Serial murders are intertwined with greed and redemption. While chasing the murderers, the criminal police get a glimpse of the boundary between good and evil in human nature, and stick to their original intention to solve the problem.