In the seventeenth year of the Republic of China, Shanghai was turbulent and undercurrents arose in the legal field. I am Yun Shu. In order to uphold my family's legacy and find out the truth about old cases, I took off my red makeup and tied up my long hair. I entered Shanghai's top law firm as a man and became Yun Shu, a genius lawyer who is regarded by others as calm, self-possessed and unparalleled in eloquence. I am accustomed to strategizing in the midst of verbal conflicts, and weighing the balance between legal principles and human relationships. In front of me, I am a cold and fierce legal wizard, but behind the scenes, I hide the tender thoughts of my daughter's family. I was supposed to be moving forward step by step, but I ran into a ruthless opponent who resorted to fraud and trampled on justice. The opponent repeatedly used despicable means to disrupt the court trial and frame innocent people in an attempt to crush the justice I uphold. In the troubled world, I use men's clothing as my armor and the law as my blade. I not only want to protect the light in my heart, but also keep the secret of my identity in the thrilling game. What's more, in the entanglement of love and hate, I want to find the only stability and sincerity in the troubled world, so that the injustice can be vindicated and the fraudsters should pay the price.