The protagonist, Lu Chenzhou, was admitted to the Criminal Investigation Detachment of the Qingzhou Municipal Public Security Bureau with the highest score in the province, but on the first day of registration, he was involved in an unsolved case that had been left unsolved for seventeen years. As he uncovered a series of cases, a black chain of interests running through Qingzhou's political and business circles gradually emerged. And every time he solves a case, he comes into contact with deeper and more dangerous secrets - including the truth about his father's death in the line of duty.
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