In the Great Realm of Xuanhuang, countless races live side by side, while immortals and demons stand in opposition. Above the nine heavens, the Demon-Suppressing Pass rises like a dragon's spine, its walls stained with blood beneath the vast sky. In the Abyss of the Underworld, the Demon-Burial City sprawls like a ghostly realm, its baleful aura soaring into the heavens. Demons from beyond the realms emerge from rifts in chaos, bringing a tide of darkness to devour the sun and moon and consume mountains and rivers. Lin Feng, a prodigy bearing a legacy of chaos, wields the Sword of Returning to the Origin and vows to use his mortal body to suppress an ancient calamity that has endured for ages. When the Demon Emperor descends and the origins of the two worlds devour each other, as heaven and earth teeter on the brink of collapse, who will wield the spark of starlight and usher in a new dawn?