Everyone's idea of survival was different.Almost eighteen years before Leona left the caves, Ember's sister Rhea was kidnapped from her front lawn and found herself in the hands of some of the most powerful people in the world. Without knowing why they took her, surviving the frozen days alone seems like an impossible goal. Despite feeling relatively safe and comfortable, she can sense that a sinister motive lies just below the thick blanket of snow, but is there anyone in the secluded, mountain-side estate she can trust?