Li Xuancang transmigrates into the body of a low-ranking cannon-fodder soldier stationed at the border, where he faces an enemy siege from the very start. In this desperate situation, he activates a mysterious system that increases his strength by one percent every day and begins his comeback by catching a blade with his bare hands. Enduring humiliation and biding his time, he rises from squad leader to commander of a hundred soldiers. He uses his strength to protect his family and his military merits to safeguard the people. Facing a threefold assault from barbarian invaders, monsters, and internal unrest, he challenges powerful cultivators with an ordinary mortal body, vowing to fight his way to survival in a chaotic age and defend the territory of Great Yan.