King Dugan has a problem. He let his guards eat their meals down in the dungeon, and they spread crumbs all over the place, so suddenly his lovely dungeons are swarming with cockroaches, not to mention goblins, serpents, evil eyes, and other nasty things. It's really gotten out of hand. Beethro Budkin, dungeon exterminator extraordinaire and the main protagonist, is called to the castle and, after a short briefing by Dugan, thrown into the dungeon with the doors locked securely after him. With only a "Really Big Sword" at his disposal, it's up to our hero to clear the place, so that the prisoners can receive their torture in a clean and safe environment.