Shen Yuan, a graduate student in the Department of History, was dressed as a sacrifice for his younger sister and was brought to the altar to offer it to the tyrant Pei Xuanxiao. The moment the knife fell, she grabbed the knife with her backhand and put it on the tyrant's neck. She coldly told him about the altar mechanism and the defense of the military depot - these poorly written things in her thesis became the trump card that turned the situation around. Regent Xiao Luan watched the battle with a sneer, Qingliu Xie Yunzhi in the middle of the court secretly plotted, and mad princess Yun Jiang clasped her fingers in the cold palace and waited for the sky to change. Shen Yuan has no intention of becoming a virtuous queen. She wants to use modern tactics to uproot this decadent dynasty, and at the same time, take under her command the tyrant who is both murderous and interested.