From the introduction:
All the worlds ended, literally broke apart, but the Heartless Princess saved the bits she could, embedding her icy city at the top of a new patchwork planet made of the fragments of the old. You are her trusted aides and servants and envoys, and today, she has a request.
Lead a caravan out of the Icy City into a beleaguered land. Keep it safe. Your destination is in the deadly deserts to the south, in a large city the Princess’s seers have recently detected. Help the people there and seek an alliance with like-minded folks. You may not make it, and if you make it, you may not return. Regardless, the adventurers will be rewarded upon reaching their destination.
For beginning characters and players.