In 1944, as waves of German ninjas parachute into Kent, Britain's best hopes for victory lie with a Spitfire pilot codenamed 'Ack-Ack Macaque'. The trouble is, Ack-Ack Macaque is a cynical, one-eyed, cigar-chomping monkey, and he's starting to doubt everything, including his own existence.

A century later, in a world where France and Great Britain merged in the late 1950s and nuclear-powered Zeppelins encircle the globe, ex-journalist Victoria Valois finds herself drawn into a deadly game of cat and mouse with the man who butchered her husband and stole her electronic soul. Meanwhile, in Paris, after taking part in an illegal break-in at a research laboratory, the heir to the British throne goes on the run.

And all the while, the doomsday clock ticks towards Armageddon.