The Somme Offensive, 1916. Harry Doyle is a young, overawed British infantryman struggling to come to terms with the insanity of war. His main objective is staying alive, and getting back home to his family in one piece. But his hopes begin to diminish when he realises the full extent of the misery and destruction around him. And the German war machine isn't the only thing he has to worry about. Something else is preying on his friends and comrades...