A shard of one of the most powerful dungeons the world remembers awakens alone, a fragment of what it once was. Only the memories of the bonds of its predecessor remain, yet the knowledge itself is plenty deadly. Appearing on the border of two kingdoms and the unclaimed wilds, the dungeon core must survive in an age of adventurers, delving into the unknown, looking among the ruins for riches of ages past. Worse yet, the chosen from another world have been summoned into the world by forces unknown.