Zhao Huanhun, a graduate student in the Department of History, was transformed into a tyrant who was about to subjugate his country. The civil and military officials of the Manchu Dynasty regarded him as a puppet, and the powerful official Fan Chong dictated the direction of the government. At the enthronement ceremony, Zhao Huan publicly recounted Fan Chong's ten crimes and beheaded him with his own hands under his Majesty Dan. The officials were shocked and regretful - they thought the new king was easy to bully, but they didn't know that the soul had been replaced in this body. Xie Yunzhi, the number one scholar from a poor family, was promoted to an unusual position. Liang Yuankui, the leader of the imperial army, rebelled in the city. Pei Yuyan, the imperial concubine, secretly turned against him, and Du Heng, an orphan from the previous dynasty, lurked beside him. A time traveler must use iron, blood and strategy to re-forge the backbone of the empire in an era of collapse.