Good-for-nothing high school student Gu Fangzhou transmigrates to Taoyuan Village in Datong, where he becomes a simpleton and depends on his sister-in-law for survival.
The only thing that transmigrates with him is half a sweet potato. Relying on that scrap, Gu Fangzhou turns his fortunes around, becomes Taoyuan Village's first man with ten thousand yuan to his name, then branches out into other businesses and becomes a celebrity in Taoyuan County.
At last, as the old county magistrate nears death, he recommends Gu Fangzhou as his successor, setting him on the road to an official career…
He introduces the people of the realm to all sorts of wondrous things, from telescopes, Liuwei Dihuang pills, and Xiaoyao pills to sanitary pads, toilets, greenhouse farming, and toilet paper, leaving them marveling in amazement. At the same time, he educates the public, teaching them modern farming techniques and composting, spreading knowledge about hygiene, encouraging women not to be ashamed of menstruation, establishing schools for girls, and enlightening the people…
But a bowl of sweet potato noodles unexpectedly brings him into contact with the emperor's third daughter, drawing him into the maelstrom of court politics. Watch as an ordinary man masters the court, marries a princess, and rises to the highest ranks of the nobility…