Black Sun Prison, the empire's ideological forbidden zone, houses the craziest, most dangerous, and smartest criminals on the continent. Lu Yuan's job is to observe the "thought sandbox" of these prisoners day after day, record their crazy dreams and ravings, and prevent the leakage of ideological contamination. For ten years, he had become accustomed to being next to madmen and staring into the abyss.
He didn't know that this boring job would unexpectedly give him a unique gift - his mind had become a living "cage of all sins." The thought fragments, lifelong learning, and even crazy obsessions of countless taboo prisoners have all been turned into weapons that he can use at any time. He can understand people's minds like a "fraudster", plan thousands of miles like a "conspirator", and be ruthless and decisive like a "tyrant".
When the prisoner code-named "The Great Wise Man" left a death mystery that pointed to the top and pushed him into a well-planned whirlpool of conspiracy, Lu Yuan was forced to embark on a road of survival full of thorns from a cautious prison guard.
In order to protect himself, he played a role as a conspirator, and in order to survive, he turned into a villain. Within the complex prison system, he battled wits with his superiors, dealt with secret agents, and even engaged in fatal games with those behemoths hiding in the dark. He may be the most inconspicuous person in prison, but with the wisdom stolen from the brains of countless madmen, he has shaken the foundation of the entire empire.
When Lu Yuan opened his eyes in the darkness, there were countless crazy souls standing behind him. He may still be scrambling for an extra ration, but his chessboard is already the entire empire.