Modern young man Zhao Kai accidentally traveled to an fictional dynasty called "Dayin" similar to that of the late Song Dynasty. The dynasty was plagued by internal and external troubles: fierce party strife and rampant corruption in the court; local powerful forces were separatist, and the people were in dire straits; the "Golden Horde" in the north was eyeing it, and pirates were raging in the south. Zhao Kai was in a dangerous situation. With the help of modern knowledge, scheming methods and a little luck, he started from the edge of power and worked step by step to remove obstacles, reform bad government, develop science and technology and economy, organize the army and strengthen the military. Finally, he defeated the powerful enemy, created an unprecedented powerful empire, and became a generation of heroes.
