One hundred years after the zombie apocalypse, those lucky enough to survive now exist in scattered cities, under the merciless rule of the City Watch. A simple tenet overshadows all aspects of daily life: obey or die. When Jonah Lovecraft is framed for murder, his status as a Watcher doesn't spare him from the ultimate punishment: being cast into the Barrens and forced to battle zombies and other criminal contestants in the Darwin Games. As he fights for every heartbeat, his daughter, Ana, embarks on her own desperate quest to uncover the truth about her father. Yet neither expects their efforts to reveal grim secrets that could tear apart the fabric of society--if either lives long enough to expose the truth.