Modern-day overworked office worker Fang Zhengyi transmigrates into the body of an impoverished county magistrate. Using investment incentives and modern business strategies, he transforms Taoyuan County into a paradise on earth. When Emperor Jing secretly visits incognito, he is astonished by Fang Zhengyi's extraordinary talents and forcibly grants him a noble title, summoning him to the capital to serve as the Crown Prince's imperial tutor. Once in the capital, Fang Zhengyi uses his rogue-like methods to reform the imperial court, outwit corrupt officials and tyrannical local elites with modern ingenuity, and renovate the slums. He even finds unconventional ways to turn the unruly Crown Prince into a capable heir. Finally, he presents the miraculous sweet potato to resolve the empire's food shortages, ushering in a legendary era of prosperity filled with unconventional antics, hilarious adventures, and fiery heroism.