The protagonist Li Ming, a modern history scholar, accidentally traveled to the Jianwen period of the Ming Dynasty and became an ordinary scholar in Nanjing. He is well aware of the historical direction of the Jingnan Campaign, but he cannot change history and can only witness this magnificent power struggle as a bystander. Through contact with historical figures, he gradually integrated into this era and felt the reality and cruelty of history. The novel shows the full picture of the Jingnan Campaign through Li Ming's perspective, with both grand historical narrative and delicate personal emotions.