During the Chongzhen period at the end of the Ming Dynasty, wars broke out all over the north. The iron cavalry of the Later Jin Dynasty knocked on the pass, and rogue bandits ravaged the Central Plains. Lin Mo, the legitimate son of the Lin family in Baoding Prefecture, was originally a good-for-nothing young master who was incompetent in literature and martial arts. He was despised by his tribe and framed by his enemies. Seeing that his family was overthrown, he unexpectedly awakened the God of War protection system.
With the help of the system, he tempered his body, practiced sword skills, and gathered volunteers, transforming from a useless person into a strong man. He defends his country and the people, and carries up the banner of protection in troubled times; when he meets the scheming and cunning Miss Su Qingyi of the Su family, the two have a witty confrontation and work together to break the situation.
Defending against powerful enemies externally and fighting treacherous villains internally, let's see how the good-for-nothings of the past wielded their mighty swords, conquered the mountains and rivers, and fought their way out of the bloody chaos of the late Ming and early Qing dynasties!