In the last years of the Zhou Dynasty, the imperial court was corrupted and there were internal and external troubles. In order to protect himself, the prince Xiao Yan endured and lay dormant, making camp every step of the way. He teamed up with Gu Qingyao, the daughter of a general, and befriended Murong Ke, a foreign hostage, to fight against the powerful minister Zhao Su, and gradually gained power. In the battle to seize the throne, he finally ascended to the throne with his extraordinary wisdom and skill. However, the throne is not the end, but a new starting point for the power struggle. In order to consolidate the imperial power, Xiao Yan did not hesitate to sacrifice love, friendship and family affection, and gradually became a loner. In the end, can he realize his ideal of change, and what price will he pay?