A thousand years ago, the ancient world fell apart. Cultivators struggled to survive, gradually splitting into the righteous and demonic paths. Li Ya, a demonic cultivator stationed at the frontier, faces a blood moon that comes once every thirty years, erupting five years ahead of schedule. He uses his clan's secret art, Blood Devour, to slay the demon beasts, but loses all his cultivation in the process and retreats to live in a bitterly cold land. A letter from the clan's patriarch gives him the courage to start over...