The world has fallen into chaos, overrun by demons, and people have turned to devouring one another. The moment Su Ming opens his eyes, he finds himself lying in a filthy ditch in the slums of Black Mountain City, reduced to a helpless, half-dead wreck. Around him, starving figures with bloodshot eyes close in, ready to carve up his flesh and share it among themselves. At the brink of death, a strange panel suddenly appears before him. It offers him the ability to trade his lifespan for martial arts training, and once he pushes a technique to its absolute limit, he can even awaken a unique talent. Through this power, he gains insights like “All things are as firewood, cutting through all falsehoods,” the Demon-Suppressing and Evil-Slaying Knife that purges the foulness of the world, and the Immortal Blood Cicada Armor, which turns his own blood into an unbreakable shield. Su Ming wields his wood-cutting blade to break free from the jaws of death, fighting to survive in a world overrun by demons. He seizes the lifespans of the demons he slays, using them to refine his own martial path. Starting as a captive in Black Mountain City, he battles demons and dark forces at every turn, and eventually rises to become the legendary demon-slaying martial saint of this broken age.