15 years after a global apocalypse, mankind is on the verge of extinction. Civilisation no longer exists, food is scarce and most eke out a living by stealing and killing. One boy clings onto life in the desolate British countryside, where staying away from others has been key to his survival. But this self-imposed isolation comes to an abrupt end when he crosses paths with another group of survivors and faces an enemy far more savage than any of them could imagine.

A bad night out just got a fair bit worse, it's the end of the world! Something terrible has happened, the undead are out in force; roaming the streets and devouring all who get in their way. A group of soldiers, civilians and teenagers take shelter in a local school for protection from the undead hordes outside, but no rescue is coming. Food is running low - morale doubly so, tensions are high and things are looking bad when a stranger arrives outside the gate. Then they get a whole lot worse.