A new novel by Jack Williamson, a “living legend” of world science fiction, an author who became famous long before the “golden age” of science fiction - and is still successfully creating... The history of the Earth, which a thousand years ago survived a monstrous catastrophe and became uninhabitable. The story of the pitiful remnants of humanity who managed to take refuge on the Moon - and waited for millennia for the hour when they could return to their home planet. A story of danger and courage, survival - and hope...