When an awkward, heavily bullied schoolboy from a dysfunctional home discovers a beautiful water nymph hiding in an abandoned Edwardian bathhouse, he must confront his own personal demons in order to save them both from the depraved custodian who keeps the enchanted waters alive with the ritual sacrifice of children.

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.