At the end of the Yong Dynasty, the imperial framework collapsed, the princes were divided, and the world fell into a situation of change unprecedented in a century. The northern barbarian cavalry went south, and the eighteen states of the Central Plains were at war. In this turbulent whirlpool, three young people with different backgrounds and ambitions - Xiao Jingyan, a descendant of the down-and-out royal family, Lu Wenyuan, a counselor from a poor family, and Shen Qinglan, the daughter of a general who disguises herself as a man - meet because of intertwined fates. They went from distrusting each other to sharing life and death, trying to find a way to save the country in this broken mountain and river.
The story takes the historical mystery of the "Longyuan Alliance" as its core and spans thirty years. From temple intrigues to battlefield conquests, from rivers and lakes grievances to the love of children, it depicts a magnificent portrait of a group of people in troubled times. When ideals meet reality, when friendship collides with stance, and when love faces home and country, they finally discover that the real enemy may not be on the battlefield, but deep in the heart.
