Gao Shuncai, a modern special forces soldier, accidentally crosses the grasslands of the late Han Dynasty in the fourth year of Zhongping. At the beginning, he is starving and dying, and is trapped in a desperate situation in troubled times. Encountering a group of fleeing people from Shuofang, just as the Huns' cavalry was plundering and raging, he relied on his top fighting skills and ultimate archery to defeat fifteen Huns soldiers by himself, beheading fourteen of them, and rescued a whole group of refugees and captured men and women, showing his unparalleled talent in the battle. Stepping into Jiuyuan City, he happened to meet Lu Bu, Cao Xing and other famous generals in the late Han Dynasty. He used modern accounting algorithms to break through the old bad debts in the city and uncovered Wei Ziheng, the corrupt accountant who supported the enemy. He was supposed to be rewarded for his great achievements, but he was framed by villains and surrounded by Lu Bu's suspicion. In a desperate situation, the modern military king officially entered the troubled times of the late Han Dynasty and started the road to a comeback.