A demon king, after being cleansed of his evil, is reborn into the modern world. Watch as he takes revenge on his enemies, dominates the world, enjoys romance, and fights endlessly. This is his journey of cultivation, madness, and dominance. (In short, it's the story of a demon reborn in the city, abandoning his demonic path to cultivate immortality, woo women, make decisive kills, and enjoy a refreshing journey without needing to pretend to be strong.)