Chen Mo, a modern free fighting champion, fell off a cliff during an extreme challenge. His soul traveled back to the late Eastern Han Dynasty (AD 192) and possessed a bereaved boy outside Chang'an. At that time, Dong Zhuo was dead, Li Jue and Guo Si were in chaos, the princes of Guandong were separatist, and the world was in chaos. Possessing modern fighting skills and iron will, Chen Mo rose from the mountain of corpses and sea of blood, broke the situation with his fists, and gained a foothold with wisdom. He rescued Su Mei, the daughter of a musician, and Shi Gandang, the son of a blacksmith, gathered the refugees, trained his tribesmen, and improved weapons. In this era of fierce generals, he clashed with famous generals such as Lu Bu, Xu Chu, and Gan Ning, and grew from an unknown soldier to the overlord of a separate country. He overturned the rules of the battlefield with his unique combat skills of "fast, accurate, and ruthless", and adhered to his bottom line of "protecting his followers and not killing soldiers to subjugate them". Finally, he used force to stop the war and established the "martial arts system", which gradually brought peace to the troubled times, leaving behind a legend of "defining the Three Kingdoms with fists".