In a world of flourishing martial arts and countless geniuses, Lin Yu, a peerless prodigy from the end of the Dharma-ending era, rises to become the supreme and invincible sword master. Demons and heretics tremble before his sword, and the strong from all realms bow down to his might. In this world of survival of the fittest, he will use his undying three-foot-long sword to achieve the glory of the eternal supreme sword emperor!