After killing a group ofgoblins, the young man just starting to make a name for himself as Goblin Slayerfinds a ring that emits a strange glow.In order to make sense of this item,he's introduced to an eccentric Arch-Mage, who then employs him in her quest toupdate the world's encyclopedia of monsters - starting with the entry ongoblins.She and the young Goblin Slayer travel to the ends of the earth togather information, and eventually reach an ominous darktower...