City Bureau forensic doctor Lin Yan was paranoid due to a miscarriage of justice, and his brother committed suicide as a scapegoat. Criminal police captain Cheng Ye has a high crime detection rate but a radical style, and his father hides secrets. The main plot of "ritual killing" is metaphorized by the seven deadly sins and spans many cities. During this period, unit cases were interspersed, and the two went from conflict to trust. At the climax, the true culprit is reversed, and they finally join hands to fight against corruption.
Purpose: It demonstrates the professionalism and persistence of forensic doctors and criminal police in pursuing the truth, and further explores profound themes such as the outlook on life and death, and the boundaries of justice.