When heaven and earth first opened, demons eating humans was an unchanging rule for ten thousand years. The youth Xiao Chi's village was slaughtered by demons, and his only younger sister was killed. He accidentally obtained the ancient Divine Weapon Scroll, which can record all weapons under heaven; every time a weapon is recorded, he gains the cultivation or even weapon soul bestowed upon the weapon. While others cultivate by meditating, Xiao Chi cultivates by slaying demons and collecting weapons. Joining the Qingping Bureau, starting from the lowest-level outer bureau member, he slays demons, breaks evil cults, and resists foreign enemies.