In the wake of a devastating accident that gravely injures one of their students, Ethan and Skye are thrust into a race against time. But as they rush from their isolated mountain camp to hospital, they return to a world utterly transformed. Homes abandoned, towns deserted, and a state under military lockdown. With a deadly virus spreading and the state under martial law, Ethan and Skye find themselves at a crossroads. Flee to the border in search of sanctuary, or sacrifice their only chance of refuge in order to warn their friends. Stranded with only each other to rely on, Ethan and Skye must navigate a virus-ravaged land. A journey filled with peril, eluding military patrols and marauding bands of looters, as well as the greatest threat that faces them all. The infected.