Xiao Chunan, an elite police academy graduate with a burning passion for criminal investigation, joins the city’s criminal police unit with excellent marks. But when he comes face-to-face with a gruesome dismemberment case for the first time, the intense pressure activates the “Strongest Criminal Investigation System,” which lets him visualize his logical deductions.
This “System” grants him extraordinary powers of observation, allowing him to analyze minute pieces of evidence and reconstruct the logic behind a crime in an instant. But it comes with a deadly side effect: it forces its Host to answer questions, and can easily spiral out of control at crucial moments, making him seem like a “weirdo” to his colleagues. (Since the System forces the protagonist to answer questions, the title was set as The Sharp-Tongued Criminal Investigation System. Looking back, that feels a little contrived, haha...) At first, he embarrasses himself in public when he loses control and is shunned by others. But by using the System’s inhuman logic to unearth crucial evidence and solve a string of murders, he begins to show his true potential.
After nearly dying when he loses control during a manhunt, he realizes the System is a double-edged sword. Worse, it seems to have an instinct for independent survival, leaving him questioning himself. When he gets caught up in a murder case involving the powerful Lu family, he uses the System to expose the truth and make a name for himself, only to be diagnosed with dissociative identity disorder and suspended after the System leaks classified information.
After suffering a head injury, the System disappears. During therapy, Xiao Chunan confronts his fractured personality and turns his logical deductions into professional instinct, finding redemption. Once recovered, he returns to the police force, solves cold cases through his own abilities, and earns back the respect of his peers. In the end, he becomes a model for the police, passing the spirit of criminal investigation on to the next generation and completing a spectacular transformation from “a weirdo under someone else’s control” into “a legend of the police force.”
