Traveling through to a troubled world where demons and monsters run rampant, the protagonist is betrayed by a traitor, falling into a dangerous predicament and about to become pig demon fodder. At the moment of life and death, the lifespan-consuming system awakens, capable of deducing various martial arts by consuming lifespan. From then on, he rapidly improves his cultivation and accumulates profound internal energy. Trading lifespan for strength, he fights his way forward through fierce battles, determined to purge the world of demons and monsters, protect the common people, and return a piece of peace to the human realm.