Modern management talent Tao Wenqu time-travels to the Ning Dynasty, becoming the second young master of the Zhenyue Duke's Mansion. Faced with examiners' hurdles, he overcomes crises with agility, using alternative memory methods, simplified characters, and arithmetic to help the disheartened crown prince regain confidence. The emperor grants official positions one after another, yet he refuses to be trapped in a teaching post, unexpectedly securing the role of the Zhengyi Envoy capable of directly debating state affairs. Newly entering the court, veteran officials challenge him with seniority, ritual laws, and family status, but he fights back one by one through grain price countermeasures and writing reforms. Amid laughter and confrontations, he uses practical skills to win a foothold, while also getting tangled in the power struggle between the crown prince and court ministers.