In the sixth year of Yuanfeng's reign, war broke out again in Longyou. The garrison soldier Su Mu, bearing a family feud, fought to the death with the Huns' horsemen in the wilderness. Underneath the majesty of the mighty Han Dynasty, there is an undercurrent of fatigue among the people and the court caused by successive battles. He guarded the border with his flesh and blood, and carried on the aspirations of his ancestors with his fierce bones. Little did he know that a storm was quietly brewing across the empire, and he was witnessing the eternal prelude to "the fall of the Han Dynasty alone by force."