"1916 - World War One. A young American soldier called Simon Bukner joins the Allied Army and soon experiences the horrors of war first hand. But he quickly realises that the Germans aren't the only threat. A greater evil is lurking beneath the battlefields and trenches of the Great War: an ancient but secret war between vampires and demons, which has begun to spill into our world. Thrust into the middle of this supernatural conflict, Bunker must fight to save humanity from the forces of darkness and choose an unlikely alliance to bring the war to an end.