Lu Zhaoyan was once the youngest Duke of Yan State. He was framed by political enemies, his title was revoked, his family was in disgrace, and he was exiled to the frontier. For ten years, he remained anonymous and secretly accumulated strength, just to return to Beijing one day. And the person who took everything away from him - Jiang Zhaolin, is now the most powerful chief minister, as cold as a blade and unfathomable. When Lu Zhaoyan sneaked into the imperial city in the name of a foreign envoy, Jiang Zhaolin finally recognized the eyes that had shielded him from arrows on the golden palace. The loyal ministers of the past are now enemies, a cup of poisonous tea, and the sentence "You owe me what you owe me, it's time to pay it back." The country is the chess piece, and the blood is the falling piece. Who is the real chess player?