Transmigrator Xiao Chen has spent twenty-five years pretending to be a notorious playboy in the capital, secretly devoting himself to preparing a rebellion. But just as the emperor dies, his nine elder brothers sacrifice their lives for the country, and the Xiongnu army closes in on the border, he discovers the truth: he is the late emperor's illegitimate son. Suddenly, he is thrust onto the throne of Great Wei. Taking command in a time of crisis, he uses ruthless and decisive methods to subdue rioters, confiscate corrupt officials' wealth to fund the army, and issue the Kill the Hu Edict to rally the people. With the power of dragon blood and extraordinary military strategy, he crushes the Xiongnu forces, puts down palace coups and internal rebellions involving remnants of the former court impersonating the crown prince, and ultimately joins forces with the Xianbei allies to personally lead an expedition against 300,000 Hu invaders, shouldering the responsibility of protecting Great Wei.