From a tribe whose way of life has not changed since the Stone Age comes a threat as old as the Dark Gods themselves.
Half a world and thirty thousand years away men are struck down by ancient but powerful magic.
But why? And from where?
From the cold wet streets of London in December to the sun-baked desert of Australia's outback. The Guardians fighters against the Powers of Darkness - wage at first a losing battle, which starts on earth but reaches its thrilling climax in a world beyond worlds with weapons outside the knowledge of most of mankind.