In the middle of the Dajing period, the northwest border was full of smoke, and the iron hooves of dogs and soldiers trampled the peace of the border. The warlord and the two factions in the court were tit for tat. Inside the border, the administration was corrupt, the military pay was withheld, the soldiers at the bottom were dying, and the people were displaced.

Lu Zheng, a young man from the Central Plains, joined the army to defend the border after his family was ruined. He started out as an auxiliary soldier who could not even hold a weapon, struggled to survive in the cold wind and snow, and grew up in the light of swords and shadows. He does not sink when he encounters injustice, does not flinch when faced with crisis, relies on tenacity to stand up, and relies on his resourcefulness to overcome situations. He gets acquainted with Zhao Laogen, a rough and soft-hearted fellow countryman, and Su Wanqing, a gentle and tough female doctor. He also encounters many hardships such as official corruption, betrayal by traitors, and the loss of military exploits.

From standing guard in the cold night at Yanmen Pass to the desperate rescue in Heifeng Mountain; from quelling the mutiny in the military camp to breaking up the conspiracy of internal and external collusion; from fighting to the death with the main force of the Dog Rong to appeasing the people and rebuilding the border, Lu Zheng gradually lost his youthfulness and counterattacked from the bottom auxiliary to become a general guarding one side. Not only did he have to resist the invasion of foreign enemies, but he also had to deal with the traitors in the court and vindicate the injustice. In the game of war and people's hearts, he understood the responsibility and responsibility, and explained what the righteousness of the family and the country is.

The wind and snow in the cold pass forge a loyal soul, and the iron-blooded heart guards the mountains and rivers. This is a legend about struggle and glory, betrayal and perseverance, ordinaryness and greatness. There are realistic and delicate border fireworks, thrilling battles on the battlefield, three-dimensional and vivid portraits of characters, and the feelings of family and country and life thinking hidden in the shadow of swords and swords. Every step of counterattack is impactful, and every perseverance is touching.
