Xu Bowen was once the most unruly criminal investigation consultant in the city bureau. He solved countless unsolved cases with his precise criminal profiling, but he was framed and expelled from his job by his former apprentice Zhao Tianyu. No one knows that Zhao Tianyu, who appears to be just and awe-inspiring, is the ultimate mama's boy who obeys his mother. All decisions are controlled by his mother, and he even steps on Xu Bowen's shoulders to gain power in order to please his mother.
On the way to clearing his innocence, Xu Bowen accidentally awakens the "criminal logic deduction" golden finger, which can instantly see through the hidden flaws in the case. He walks on the edge of the rules with his free and unrestrained style, and engages in a tug-of-war of wits with Zhao Tianyu: sometimes setting up brain-burning puzzles to play with each other, sometimes leaving fatal bait on key evidence. From serial thefts to the investigation of old cases, Xu Bowen worked step by step, not only to clear his own grievances, but also to tear off Zhao Tianyu's mask of hypocrisy, so that this mama's boy who was controlled by his mother would be completely destroyed in the web of crime he had woven.
