Lin Wei, an intern in the law department, was assigned to Jiang Chen, the "iron-faced mentor" of the law firm, to take charge of a corporate economic dispute case. Jiang Chen has strict requirements on details, but Lin Wei always finds mistakes in the chain of evidence compiled by Lin Wei late at night, until she discovers that Jiang Chen will quietly correct her omissions and help her block the difficulties of her clients. When the case involved official corruption, Jiang Chen had to bear the pressure alone to protect Lin Wei. Only then did Lin Wei understand that under the sternness of this "iron-faced mentor", there was a tenderness that was not easily revealed.