Chen Yuan's transmigration grants him dominion over the eight hundred miles of Langdang Mountain as its Mountain Patrol Military Officer. As the Great Qian Dynasty crumbles in its twilight era, demonic calamities sweep across the realm, transforming the human world into a battlefield of chaos and suffering. Monstrous entities and malevolent spirits emerge to terrorize the martial world, sowing discord and destruction. Wielding the legendary Tiger Talisman for Mountain Moving, Chen Yuan assumes his celestial duties as heaven's guardian, leveling cursed peaks and razing unholy temples throughout his territory. Within the eight hundred miles of Langdang Mountain, no demon or monster shall persist under his watchful patrol.