In a world ruled by four kingdoms—where strength decides everything—Ashfall stands as the weakest and most forgotten. Three cousins live there quietly: a silent swordsman, a calm strategist, and a cheerful powerhouse. But their ordinary lives are about to collapse. Because something unnatural has appeared across the world. They are called Invasives—creatures that erase everything they touch. Rumors speak of the Zex, ten monsters powerful enough to destroy kingdoms alone, and a mysterious Nameless King whose existence is not even supposed to be spoken. When the strongest kingdom finally witnesses an Invasive, fear spreads across all nations. And as war preparations begin, one terrifying question rises above everything else: If even kingdoms are powerless… how long until humanity itself disappears?