As a reclusive marquis, Song Yan was accidentally bound to an omnipotent system. He was living in a troubled era of espionage wars where martial arts were prevalent. He could not only control all kinds of strange beasts to detect secret clues, but also rely on his top martial arts strength to deal with various forces. Under the eyes of the martial arts masters in the city, Song Yan successively solved many hidden espionage cases, gradually tearing open the enemy and puppet spy networks hidden in the dark, and maintaining the stable order of the areas under his jurisdiction.