To be honest, the plot makes as much sense as the rules involving the consumption of Iron Rations. I have no idea why they made a D&D movie with such a lofty "let's save the little people" plot. Most D&D games I can remember playing involved going into the cave, kicking the living crap out of a few kobolds, and coming out with booty. The loftiest goal we ever had was to keep from puking up our sour cream and onion ruffles.
The Brunching Shuttlecocks Dungeons & Dragons