Modern gold-medal bricklayer Zhao Dashan time-travels to ancient times, becoming the eldest son constantly squeezed by his original family. Faced with his parents and younger brother forcing him to guarantee a twenty-liang debt for his brother, he publicly tears up the document, asks people to witness the family separation, leaves with nothing, and takes only his set of craftsmanship tools. Living beside an abandoned brick kiln, he uses modern architectural knowledge to repair his dwelling, refuses emotional kidnapping, and holds the bottom line of the family separation contract. He repairs the village school, takes apprentices and sets rules, and refuses to cut corners for unconscionable money. When a torrential rain strikes, he pre-judges the dangerous housing situation, rescues people at risk, and exposes the collusion of the black-hearted foreman and his younger brother cutting corners. With the help of the female lead Lin Chunmei, he clears his name from framing and rebuilds the village school.