Since the beginning of the Ming Dynasty, Zhu Yuanzhang, the Emperor Taizu of the Ming Dynasty, set up the commander of Jinyiwei, and then set up the south guard and the north guard to inspect hundreds of officials, with great power. The Jinyiwei have been around for a hundred years. The north guard and south guard can't work together. The foreign invaded the Central Plain. There're numerous wars in the Jianghu and bandits are rampant. There're also the famous robbers. A young Jinyiwei, Yuan Xiaotang, as the son of Yuan Xiaozhi, the commander of the north guard, saw the sudden change in the imperial city and wanted to prove that he had made great achievements.