In the Shanghai Concession in the 1930s, a strangulation case was discovered in the clock tower. Lu Chen, a former psychology professor, fell into a trap due to an unjust case. He can see through micro-expressions, but suffers from prosopagnosia and PTSD. Reporter Lin Xiaoman enters the bureau with intelligence to find out the truth about his father's unsolved case. Philanthropist Chow Mo-wan uses a sophisticated trap to take revenge, and the forensic autopsy hides Bible codes. When the gang fire is intertwined with the conspiracy of the clock, the scale of justice will eventually tilt under the bloody pendulum.
