Humanity has entered a period of technological singularity fueled by a series of massive supercomputers orbiting the Sun (Dyson Sphere).
Humans no longer age normally, and even death has been overcome by means of resurrection facilities which will download a backed up copy of a personality and memories into a reformed body.
The sole dark spot seems to be the long dormant fear of an episode from the distant past: the Control Alt Delete War.
As other groups discovered this new weapon they re-engineered it for their own purposes, including one version of the virus which created "zombies", people with an uncontrollable violent rage toward others.
Over a thousand years ago Perez had been part of the team which created artificial intelligence, thus launching humanity along its path to paradise.
Accompanied by his cat Bitsy, who is really an avatar of the supercomputer Endora, he is now dedicated to studying the "implied spaces" of the human constructed pocket universes: the places which were created as the byproduct of desired features.
When it is determined that the priests were in fact "pod people", illegal artificial lifeforms, they become worried that someone is engaged in a plot to bring down civilization.
Returning to his home universe Topaz he informs the authorities, including his friend the Prime Minister, who begin an investigation.
Aristide is forced to kill Daljit when she becomes infected with the virus and attacks him but she is soon resurrected and along with some others who perished in the plague dedicates herself to the war effort.
He relates to Aristide the story of how he and a version of Daljit had gone with millions of others to colonize Epsilon Eridani, creating a new world and a supercomputer orbiting the sun.
However, before she can fully explore the implications of this shocking discovery Epsilon Eridani undergoes a stellar expansion which is labeled by those in the Sol system as "The Big Belch".
Pablo explains that he is not attempting to destroy human civilization, but rather to take it over so that everyone will work towards his goal: using a wormhole to travel back to the origins of the universe and punish its creators.
As the other supercomputers adjust their orbits in order to stay out of the line of fire, the authorities desperately attempt to come up with a plan to defeat Vindex.
Aristide then comes up with the idea of creating a massive pocket universe, dubbed an "overpocket" which will encompass the inner solar system, thus cutting Vindex off from his mass driver in the kuiper belt.