A frail youth seeking medicine in the mountains, Jiang Xiaobai becomes a humble servant in a prestigious immortal sect. When he discovers a mysterious black sword, destiny shifts—unlocking an unprecedented cultivation path. Through relentless combat, he masters forbidden techniques: consuming demon souls to amplify his essence while resisting their intoxicating corruption; extracting alchemy cultivators' power to concoct miraculous pills in sacred cauldrons; harvesting scholar knowledge to inscribe transcendent talismans; and purging Buddha nature to sanctify the heavens and earth. His ascension proves unstoppable—formidable demons from forbidden zones willingly submit to his supremacy, and the sect's revered ancestors prostrate themselves, honoring him as their master.