Alright, here's what you need to know:
In this roleplay, you will be playing a creature of your own choice - fantasy creatures are probably better, but if you want to be a human, go right ahead. You will be part of a group that is traveling together. Make up the reason among yourselves - maybe a merchant caravan, or a traveling circus, or whatever. That part doesn't matter too much as long as you all agree. Now, your wagon breaks a wheel [or horses get sick, or there's a huge storm] and you have to stop in a deserted town. You find an abandoned castle and break in to stay the night.
That's all the details you're going to get ahead of time >:]
Post your Character Sheets here!