Cui Yan, the lonely minister of the Leng Dynasty, sneaked into the troubled times with the legacy of the previous dynasty, and played with the puppet emperor Shen Zhao in the cracks between the eunuch and the feudal lord. Xie Linchuan's account books, Yan Wushuang's cavalry, and Zhao Huaijin's poisonous prescriptions all became the sword that broke the situation; but Liu Ruhui's ambition made every step of victory hidden with betrayal. When the fire of national restoration is ignited, who is the real savior?