The Eden Project has returned and Rourke must find a way for the six space shuttles to land. They find out that there are other survivors on the planet. A Soviet underground city has survived. An old enemy Vladimir Karamatsov has survived his gun fight with Rourke. Like him he and a number of his followers were able to survive in suspended animation. He now wants revenge and strikes seriously wounding his son and kidnapping the other members of his family. Now Rourke must save his family and successfully bring down the Eden Project. Also another civilization has survived. A group of Nazis had built an underground city in Argentina. Now they also are a threat. How will civilization survive the twin threats of the Soviets and Nazis.
So there are other survivors after the Great Conflagration. And of course they happen to be advanced societies of Soviets and Nazis. Well I suppose the future would be boring if there wasn’t some threat but Nazis and megalomaniac KGB agents. A very grim outlook for Rourke’s family and the returning Eden Project. It was a surprise that they resurrected Karamatsov. I thought he was safely dead back in #3 but he’s back and completely psychotic. A great setup for conflict in future books.