Donna Barba Higuera

"A girl named Petra Pena, who wanted nothing more than to be a storyteller, like her abuelita. But Petra's world is ending. Earth has been destroyed by a comet, and only a few hundred scientists and their children - among them Petra and her family - have been chosen to journey to a new planet. They are the ones who must carry on the human race. Hundreds of years later, Petra wakes to this new planet - and the discovery that she is the only person...

For over 400 years, the world has been a barren wasteland. The few humans that survive scrape together an existence in the cruel city of Pocatel--or go it alone in the wilderness beyond, filled with wandering spirits and wyrms. They don't last long. 13 year-old pickpocket Leandro and his sister Gabi do what they can to forge a life in Pocatel. The city does not take kindly to Cascabeles like them--the descendants of those who worked the San Joaquin...