Seven years after the apocalypse of the Great Yan Dynasty, a series of murders occurred in the capital. The deceased were all important officials of the court. Each corpse had a bloody palm print between the eyebrows. Wu Chen, the head catcher of the Criminal Department, was accidentally involved in a murder case during an investigation. What was even more bizarre was that he was mistaken for the murderer in full view of the public and turned from a head catcher to a wanted criminal overnight.
While escaping, Wu Chen discovered that a mysterious bloody mark appeared on the palm of his left hand. This mark not only allowed him to see the last scene of the deceased before death, but also sensed the remaining breath of the murderer. This ability that was supposed to bring death became his only hope of clearing his grievances.
However, when Wu Chen followed the clues and investigated in depth, he found that all the evidence pointed to a truth that he could never believe - the man behind the scenes turned out to be the current emperor. What is even more shocking is that everything the emperor did was to awaken a peerless magic power that had been sleeping for thousands of years.
In this life-and-death pursuit, Wu Chen not only has to face the pursuit of masters from all walks of life, but also has to solve carefully arranged mysteries. As the investigation deepens, a bigger conspiracy emerges: It turns out that all this is for a book called "Blood Nerve" that has been lost for many years.
