In the 1930s, Xu Congliang, a pseudo Manchu police officer with outstanding abilities, wit and courage, but without firm beliefs, won the trust of the police chief Jin Ronggui through his outstanding ability to solve cases in the dangerous internal struggles of the Harbin Police Department; On the other hand, Xu Congliang's admiration for Guan Haidan, the head of the Criminal Investigation Department of the Police Department
In the 1930s, Xu Congliang, a pseudo Manchu police officer with outstanding abilities, wit and courage, but without firm beliefs, won the trust of the police chief Jin Ronggui through his outstanding ability to solve cases in the dangerous internal struggles of the Harbin Police Department; On the other hand, Xu Congliang's admiration for Guan Haidan, the head of the Criminal Investigation Department of the Police Department