Qin Ming is one of the best medical examiners in the bureau of public security of Longfan. He is the chief of the expert testimony department. He needs to lead his crew to solve all kinds of hard cases with Captain Lin Tao and his men. They fought against the woman who angrily killed her fiance, the man who accidentally caused the death of his ex-wife, the doctor who murdered his girl friend to cover some secrets...As the criminals in Longfan are getting less and less, a murderer that disappeared ten years ago seemed to be back.