After transmigrating to the Ming Dynasty, Lin Feng becomes the county magistrate of Fengyang. Using modern knowledge, he transforms a poor county into a prosperous land but deliberately pretends that it is impoverished to protect himself. When Zhu Yuanzhang travels incognito to inspect the region, he mistakes Lin Feng for a corrupt official. After a series of twists and turns, the truth finally comes to light. Lin Feng suppresses bandits with firearms and provides disaster relief through labor projects, earning the emperor's favor. He also catches the eye of Prince of Yan Zhu Di and eventually heads north to Beiping.