When Regan was a young girl living in the small town of Altus, OK, Kellan was just her brother’s best friend. Then the virus came, turning the world’s population into zombies, and he became so much more. They were only kids, but he saved her. Watched over her. Kept her alive. And he’s been doing the same thing every day since.

After living the apocalypse for nine years, Regan thought they’d experienced every kind of loss and terror imaginable. But when a new group starts wreaking havoc in the Oklahoma wastelands where they live, Regan and Kellan are faced with a new set of horrors. When they cross paths with a teenage girl, offering to help seems like the right thing to do. But Regan and Kellan soon discover that lending aid to the girl very well could lead to their undoing.