The heroine Su Nian, a top psychiatrist who can understand people's hearts through micro-expressions, tone of voice and behavioral logic, had her license revoked due to a medical malpractice dispute, and her career hit rock bottom. In order to prove her innocence and find out who was behind the scenes, she resolutely crossed over to obtain a lawyer's qualification certificate and entered a law firm that was on the verge of bankruptcy. Relying on her keen observation that is almost "mind-reading", Su Nian has won many battles in court. She specializes in taking on difficult and complicated cases that no one dares to touch. She sends perfectly disguised criminals to the law and quickly becomes a well-known "truth lawyer" in the industry.