“Of course,” you say. “This sounds like an adventurous quest, and adventures and quests are what I live for. Er, are the things for which I live.”
“Go forth, then! Or, y’know, first. You seem to be prepared, and you’ve even learned that prepositions are not something to end a sentence with. The Obvious Plot Device might be somewhere in Cobb’s Knob, or it might have been spirited away to the Spooky Forest. Or, it might be somewhere on Mt. McLargehuge. You should start your search at one of those places.” He hands you a map of the Kingdom and politely pushes you out the door.