Shen Zhao made a mistake and confessed that he was an orphan. He was secretly cultivated by the second prince Xie Yunshu and gradually became a sharp weapon in the court. When Pei Jin's poison from the Imperial Hospital, Liu Zhaoyang's military talisman from Zhenbei General, and Zhao Wujiu's files from the Ministry of Punishment were revealed one by one, he discovered that he was the substitute of the twins. On the day the truth was revealed, he personally chopped off the emperor's head, and the real heir was actually the baby in the queen's arms. Xie Yunshu turned around and left, Pei Jin burned himself in the alchemy furnace, and Zhao Wujiu recited "The Law of Regicide" in the hall. The border cavalry had arrived, and Shen Zhao, standing on the blood-stained dragon steps, wondered whether he should accept the remains of the imperial power that no one dared to recognize.