After an enforced isolation on earth, Master Sergeant Michael Venn returns to Mars to further investigate the ancient artifacts that have suddenly awakened, but is instead led to Saturn's moon, Titan, where war is brewing between the Drifters and the Gurus.

"They came in peace, bearing gifts. The Gurus were a highly advanced species who brought amazingly useful and sophisticated technology to the human race. There was, of course, a catch. They warned of a far more malevolent life form, beings who have hounded the Gurus across the cosmos. The media have taken to calling them the Antagonists -- or Antags -- and they have already established a beachhead on Mars. For all they've done for us, the Gurus now...

"Multiple Nebula and Hugo Award-winner Greg Bear returns to the Earth of his acclaimed novel Eon--a world devastated by nuclear war. The crew of the asteroid-starship Thistledown has thwarted an attack by the Jarts by severing their link to the Way, an endless corridor that spans universes. The asteroid settled into orbit around Earth and the tunnel snaked away, forming a contained universe of its own. Forty years later, on Gaia, Rhita Vaskayza recklessly...