Jiang Lin is a sharp-edged top criminal defense lawyer, and Xie Youning is a calm public prosecutor. The two have been fighting in court for three years and are each other's old enemies. During the trial of a major case, Jiang Lin tore open the back of the opponent's lawyer's certificate in court - revealing a concealed internal report letter from the Supervisory Committee, pointing to the secret past that Xie Youning had secretly helped to clear up the real murderer. The truth is like a knife, and the court is silent. She did not deny it, only said: "What you have been chasing is not the evidence, but the truth I want you to see." The fate of the two has been entangled in the gray area of law and morality. Who is the real night watchman?
