As the Earth tilts on its axis, precipitating a new Ice Age, hordes of rabid lemmings race towards Europe.
Meanwhile a time-travelling Hitler emerges in sleepy Devonshire and proceeds to clone himself in preparation for the march on London.
Will a Fourth Reich rise to strangle the Mother of Parliaments? Or will London be devastated by a nuclear accident on the Tube?
The luckless crew of Spaceship Earth have no time to pose such questions as an epidemic of demonic possession and prophetic visions erupts in the USA and an approaching envoy from a distant galaxy broadcasts the following message:
YOU EARTHLING SCUM ARE THE DREGS OF THE UNIVERSE. WE COME TO ANNIHILATE YOU PAINFULLY AND RAPE YOUR PLANET
EARTHDOOM! is the disaster novel to end 'em all. And not before time . . .