Over three thousand years, the human race's spark has been extinguished five times. Each time the fire died, someone turned themselves into a new spark. Xu Taiping, a low-grade spiritual-root cannon fodder on the front lines, awakens the ancient Heavenly Firestarter System on the brink of death. Slay demons to increase cultivation; comprehend techniques and advance realms. While others cultivate bitterly for a hundred years, he unleashes a forty-meter arc of lightning with a single slash. With demon hordes besieging the city and traitors lurking nearby, he rises from a discarded pawn assigned to fill the trenches to the banner of humanity, cutting his way forward one slash at a time. The embers never die; the sparks spread into a prairie fire. This time, it's my turn to protect this mortal world.