In the fifteenth year of Tianbao, the An Lushan Rebellion ravages the empire, and Tongguan Pass teeters on the brink of collapse. A modern soul travels back in time and wakes up as Li Tan, Prince of Jianning. Fully aware of history's course, he knows he is destined to be slandered and put to death before long. Faced with Emperor Xuanzong's foolishness, Yang Guozhong's despotic power, and the impending catastrophe at Tongguan, Li Tan resolves to defy his tragic fate. He secretly enlists talented allies and maneuvers among the royal court's factions to amass his own strength in chaotic times. As a descendant of Emperor Taizong, he vows to rescue the crumbling empire of the Great Tang and rewrite history.