The special soldier Zhao Huan traveled through time and became a prince in troubled times. He started with an isolated city and 3,000 remaining soldiers. He relied on modern military knowledge to stabilize his position, but found that he had to face not only the enemy's cavalry, but also the constraints of internal powerful officials. The counselor Su Nianqing presented him with a "recruiting order", and the fierce general Wei Tieyi, the intelligence agent Liu Ruhui, and the swordsman Bai Heqing came to surrender one after another. However, there is more to the chess game than meets the eye - the enemy prince Murong Zhao is also looking for a time traveler, and Zhao Huan's time travel itself is a game that spans a thousand years.