Three months have passed since Alexandra traveled through the wasted death fields to reach her sister, Jane. There’s no resemblance to her former life. No college. No best friend. Her mother is dead. Her father and her friend, Cole, toil away in the labs of her sister’s research facility, working to create a vaccine for the virus that ravages the living. Hope for a cure is dampened by the growing society Jane has developed. Armed troops fill The Fort, and the only way Alex knows how to keep an eye on her sister is by joining the elite Fighter army led by Wyatt, a mercenary and deadly soldier. Some days, Alex considers him a friend. The rest of the time, she’s unsure where his loyalties lie. The truth is, Alex isn’t always sure about herself, either. All Alex wants is to right the wrongs of her sister’s dangerous meddling, but Jane has bigger plans than vaccinating the survivors. Alex and her allies quickly learn that rabid cannibals are not the biggest problems facing mankind, but at what lengths will they have to go to save the world?