"Seong-jin, a young boy raised by immortals (Xian), finally descends into the mortal world.

He finds a world already teeming with demons and evil spirits, while the Murim (Martial Arts World) is on the verge of exploding over the legacy of the Heavenly Demon!

Armed with both the mystical arts of the immortals and god-like physical strength, Seong-jin becomes the youngest demon hunter in history—

And before him, demons, martial artists, and the rules of the world itself will all be utterly shattered!"