Lin Tingwan, a psychology genius from the police academy who was forced to drop out of school, became an Internet celebrity in solving crimes with his "micro-expression reading" golden finger that can detect all lies. When she was forced to form a partnership with the criminal investigation captain Lu Chen, who only believed in hard evidence, the two went from mutual rejection to fusion, and jointly investigated a serial unsolved case closely linked to the death of her mother. However, the mastermind behind the codename "Judge" is using carefully designed "trials" to try to prove that their procedural justice is a hypocritical joke.
