In 649 AD, Li Shimin lamented the merits and demerits of his life on Mount Zhongnan, and longed to be reincarnated and create another prosperous age. The soul has been drifting in the gaps of time and space for hundreds of years. In 1449 AD, when Zhu Qizhen, the Yingzong of the Ming Dynasty, was about to be captured by Wala in Tumubao, his soul was accidentally fused and reborn. Li Shimin will bring his complete imperial mind, experience in governing the country during the Zhenguan period, and vague understanding of later history to start another legend in a new era.