A family massacre made Guan Hongyu, who was originally free and roaming, a wanted suspect on the run.As the captain of the Criminal Investigation Detachment, Guan Hongfeng vowed to find out the truth, but out of the principle of relatives avoidance, the police banned Guan Hongfeng from participating in the investigation of the family killing case, and Guan Hongfeng resigned in anger.Zhou Xun, who was transferred to the acting captain, was under pressure to solve the case. In order to pursue Guan Hongyu's whereabouts, he designed to allow the resigned Guan Hongfeng to continue to participate in the investigation of major major cases as “ non-staff consultant, while everyone in the police force was concealed.Now.Due to the ”Dark phobia, the %Advisor Guan Hongfeng who appeared in the police force during the day and night was actually played by the twin brothers. The two brothers with different personalities kept getting married in the police force, and were always being carried by Zhou at any timeThe patrol and various personnel discovered the dangers, and solved various major cases along the way, with the only purpose of waiting for an opportunity to review the case files of the family-killing case and find out the truth to repay the innocence.