After the eruption of the Yellowstone supervolcano destroys his city and its surroundings, fifteen-year-old Alex must journey from Cedar Falls, Iowa, to Illinois to find his parents and sister, trying to survive in a transformed landscape and a new society in which all the old rules of living have vanished.

"Darla Edmunds has faced a lot of challenges in her seventeen years: Her dad died in a farming accident when she was fourteen. Her mother retreated into hyper-religiosity, leaving Darla to run the family farm almost single-handedly. But those struggles pale in comparison to the one she faces after the Yellowstone supervolcano erupts, plummeting the world?and Darla?s small corner of Iowa?into a cataclysmic natural disaster. DARLA'S STORY is book #0.5...

More than six months after the eruption of the Yellowstone supervolcano, Alex and Darla retrace their steps to Iowa hoping to find Alex's parents and bring them to the tenuous safety of Illinois, but the journey is ever more perilous as the remaining communities fight to the death for food and power.