Yan Lingyun: An orphan from the previous dynasty, he appears to be a down-and-out scholar, but is actually a prodigy in swordsmanship. He bears the hatred of his country and his family, and has a tolerant and tenacious character.
Lu Chenzhou: The son of a general of the current dynasty, he became a fugitive because his family was framed. He is generous and righteous, and is good at military strategy.
The two are life and death friends linked by fate, comrades who redeem each other, confidants with similar but sometimes conflicting ideas. With the brotherly alliance of "mountains and rivers as our oath" as the main line, they unfold in the troubled times of intrigues, grievances, and feelings of family and country.
