You awake on a crisp October morning with the sun shining. It's going to be a beautiful day! As you get up to start a morning fire, you notice a small scroll has been slipped under your door tied with dark red ribbon. "Odd," you think to yourself. "Why not just send mail?" You open the scroll and the contents surprise you.
"A costume party? Hmmm - I'll have to see if I can find a costume. Last year everyone was running around as the same thing and I definately don't want to just be the same as everyone else. And I've never even heard of the Cavern of Chaos..... sounds kind of..... scary. I wonder if there will be party favors....."