A car crash occurs and directly connects to the kidnapping of a cop's daughter, Lin Wei. The only suspect in the case, Yang Nian, suffers from amnesia due to the accident. Confronted by Lin Wei and endless murder attempts, a confused Yang Nian seeks to recover his memories. He returns to the crime group that kidnaps children to harvest their organs and gradually remembers what he had forgotten. Yang Nian soon realizes it is all closely related to the captain of the serious crime unit, Lu Ran. These is something dark in the police force. What was his real identity before his amnesia?