Europe, 1914-1918. The Great War rages - the War to End all Wars. Spurred by a vision of a horrific future, Gideon Argo joins an international squadron of pilots flying for France, and begins gathering a crew whose true names may be lost to the ages, but whose feats will live on: the fearless bruiser, Zed; the sagebrush bard, Cactus Bill; the air ace, Wings; the radio wizard, Sparks; mysterious demolitions expert, Johnny-D; and the enigmatic Doc.

Called upon by British military intelligence (and Black 23) agent Anton Horatio, these men fly far behind enemy lines to stop a secret cult from harnessing the power of a fallen angel and sowing further chaos in a world already beset by terrors. But what role has the mad monk, Rasputin, to play - or even the exotic Mata Hari, who may or may not be a turncoat?

Join the battle for the soul of the 20th century, and remember the clarion call - "Zombies Fight On!"