Cheng Du, of the Handong Provincial Public Security Department, was once a pawn of the powerful. After uncovering the Shanshui Group's secrets of corruption, he was framed and lost everything. Reborn on the eve of the Dafeng Factory incident, he resolves to change his fate.
He acts deferential toward Qi Tongwei while secretly gathering evidence, protecting Chen Hai and witnesses, and intercepting leads as he navigates the narrow gaps between rival powers. But then he discovers that another reborn figure is secretly meddling in events, making it impossible to tell friend from foe.
With corrupt forces watching from the front and a mysterious adversary hemming him in from behind, Cheng Du wields evidence as a blade and the law as a shield. Together with his allies, he quietly weaves a legal net, using testimony from the powerless to rip open the secrets of the elite. With only his humble strength, he fights to bring justice back to Handong.