The story is set in England at an unspecified time in the future, where we find that Earth may have all but been completely dominated by some sort of invasive fungus that can latch itself and grow inside humans within seconds, turning them into Hungries, aka zombies who seek out non-infected humans and other forms of life in order to sate their thirst for flesh and blood. Within a heavily guarded military base, Earth uninfected soldiers, scientists and civilians are working diligently on finding a way to cure the virus, experimenting primarily on a group of young boys and girls born infected but have capacity learning. i.e. they are cannibals, but far from mindless.