Here, from the other side of time, come:

THISTLEDOWN, the asteroid starship of a future that is not quite our future;

GAIA, a parallel reality where Alexander the Great’s empire has ruled for two thousand years;

and THE WAY, an infinite corridor through space-time which traverses and encompasses whole universes.

And as the strands of these mysteries are unravelled, so the ordering and the end of mankind - and our entire Universe - come into question.