vengefulspirit said:
I hope that this will raise questions for the players. Who will they ally with? Could they split themselves up? Could they make alliances between the groups. Do any of them deserve saving?
Please let me know what you guys think. I'm hoping for ideas on how to flesh this idea out and any key events that could happen.
Take a look at the Pendragon system, if you are not familiar with it already. The game has very useful guidelines for handling these sort of adventures. It might give you several ideas. Try to find a copy of the adventure "Savage Mountain". It is built upon a very similar idea as yours.