A marriage edict was issued to marry the "sickly" prime minister's daughter Xie Yunshu to the prince Xiao Yan. The world only thought that a beauty matched the prince, but they didn't know that this marriage was the deepest plan of the seriously ill emperor on the dragon throne. Xie Yunshu was actually the sharp blade in charge of the royal secret guard. He went to the East Palace as an assistant, but in fact he was monitoring and balancing. On the wedding night, under the light of red candles, the gentle prince held the chess piece and chuckled: "I know you are the master of Qianlin." And she also calmly made the move: "Do you know that your highness's well-trained Xuanjia army has violated your majesty's taboo?" From then on, a chess game that started with conspiracy and contract quietly unfolded. She manipulated the wind and clouds in the deep palace curtains, while he manipulated the situation in the open face of the court. Suspicion and temptation intertwined, wisdom and means collided, until the moment when the mountains and rivers were turbulent and the arrow came, he protected her with his body, and she abandoned her blade for chess. In this eternal chess game of power in the world, we must hold the pieces side by side to be worthy of it.