The light of freedom. That is all Jennifer remembers before she escaped a secret compound deep in the wooded terrain of Arkansas. Eluding her captures, she finds a world in ruins. Abandoned cars on the interstate act as tombs for the dead, and many of those that are living have been mentally altered by what the survivors call the SA8 virus. Jennifer must persevere through the infected camp in Texarkana. She must also deal with the dispute of the survivors as to whether she will be allowed into their community when her blood tests come back as inconclusive, and the one man who is willing to sacrifice everything to help her find the truth behind her diagnosis. Is she resistant to the virus? Does she hold the cure for human survival?