Criminology professor Lu Linfeng is good at profiling demons, but he never thought that the deepest shadow came from the mystery of his father's death. When the serial killer "The Ripper" reappears with a bloody origami horse, he is forced to step into the game. Secret rooms, sound waves, neurotoxins... Every case is a carefully choreographed "course". The mastermind behind the scenes, "Dark Eyes", whispered in the dark: Your father died because he glimpsed the truth, what about you?
This is a murderous pursuit that spans two generations. Lu Linfeng must stay awake in the twisted art of crime and find hope in the deadly psychological game. When he finally tears off the mask of "Dark Eyes", he will face the enemy's twisted invitation: join the evolution, or become a specimen. Those who gaze into the abyss must become a light that cannot be swallowed
