The story takes place in the "Tianyuan Dynasty" in fictional history. The King of Yan, Xiao Chengxu, witnessed his family being framed when he was young. In order to avenge the bloody feud, he endured and lay dormant, step by step, and became involved in the power struggle in the court. He meets Murong Xue, the former princess who is on a mission to restore the country, and the two gradually develop a sincere relationship while using each other. However, in the whirlpool of power, love has also become complicated and dangerous. The prince Gu Yunzhi is kind but cowardly, and gradually loses himself in the power struggle. The emperor favored Lu Wanqing, but he neglected the management of government affairs, leading to chaos in the government. Facing internal and external troubles, Xiao Chengxu relied on his extraordinary wisdom and skill to eradicate his dissidents step by step, and finally ascended the throne as emperor and created a prosperous age. But behind the pinnacle of power is endless loneliness and sacrifice. In the end, he chose to put down his power and retreat into the mountains with Murong Xue to protect each other's happiness.