Teenage Reese (Brighton Sharbino) has a love for virtual reality role playing and a knack for beating even the toughest survival games. But when a nuclear strike causes an electromagnetic pulse that cuts off all power, water, and communication to the entire western United States, Reese finds herself plunged into an all-too-real fight to survive. As pandemonium grips her city, Reese and her father (Dominic Monaghan) set out on a desperate journey in search of safety-a perilous trek through a world gone mad where every encounter with a stranger could be your last.