On their wedding day, Xie Zhaoning was humiliated by the annulment of the engagement. He tore up the marriage contract in public and laughed wildly to reveal that the military power of the Marquis of Zhenbei had already changed hands. She is not an orphan girl who is allowed to be bullied, but an orphan of the late emperor, carrying half a tiger talisman. The prince who once abandoned her like a pair of worn-out shoes was just a puppet; the old enemy Pei Jin who once looked on with cold eyes turned out to be her biological mother's former subordinate. The undercurrent in the court is turbulent, the prime minister's daughter is hiding the truth, the exiled veteran is secretly escorting him, and the traitorous king's concubine is at every step of the way. She uses the marriage certificate as a sword and military power as a blade. From being a useless girl to a chess player, she is tearing apart the mask of this country with every step she takes.