Lin Yi, a top doctor in criminal psychology, was framed by the underworld for murdering his master and became a prisoner. Awakening of the "logical deduction system" in prison can predict enemy behavior and dismantle conspiracy layouts. After being released from prison, he transformed into an underground chess player, using his high IQ to infiltrate gangs, kill enemies, control the police and agents, and gradually build his own intelligence empire. From a lone avenger to a black-and-white master of the dark side, he worked step by step, rebuilding order amidst gunfire and lies, and ultimately made the entire urban underground world tremble at his fingertips - an ultimate counterattack using brain power as the blade and human nature as the chess piece.
