In the dark corners of the bustling city, a series of bizarre cases quietly occurred. Qin Feng, a calm criminal investigation expert who believes in "evidence first", and Lin Yan, a genius psychological profiler who can discern "the subtleties of the human heart", were forced to form a team because of the case. However, the evidence at the crime scene was carefully tampered with and forged, leading them astray. Qin Feng insisted on the authenticity of the evidence and was skeptical of Lin Yan's psychological profile; Lin Yan believed that Qin Feng relied too much on evidence and ignored the complexity of the human heart. The estrangement and prejudice between the two gradually deepened.
As the case progresses and the number of victims continues to increase, time becomes increasingly urgent. In their predicament, they realized that only by breaking through each other's obstacles and trusting each other can they find the truth. But the villain will not sit still and wait for death. He constantly creates new perjury and interference, alienating the relationship between the two and causing them to fall into crises of trust many times.
