Chu Feng, a modern special forces fighting instructor, passed through Xuanzhou after being sacrificed in a border anti-terrorism mission and became a prisoner of war gladiator numbered 739 in the Black Abyss City Arena. Relying on top military fighting skills, iron will and the awakened "aura perception" talent, he survived in a life-and-death struggle, absorbed spiritual cores to break through the realm, made comrades in arms, revealed the dark secrets of Black Abyss City, and finally overthrew the rule of the Black Stone Lord, integrated the aura power, and became the iron-blooded guardian of Xuanzhou Continent.
