A Dyson Sphere under construction by microbots, but the bots are scavenging one part of the sphere to construct another. And where is the civilization that designed this massive project? "This is cutting edge, hard science fiction at its finest. This broad-minded, far-sweeping saga is both realistic and daring. The reader feels that yes, this is what the universe is like and what man's role in it will come to be." Professor John B. Rosenman, Norfolk State University. Braxton Thorpe and crew, are on a voyage of discovery in the starship Andromeda, headed toward the Cold Spot in the Cosmic Microwave Background, deep in the constellation of Eridanus. As they approach the Keid triple-star system, they stop at Keid A and the planet Vulcan, home to Spock in the "Star Trek" television and film franchise.

Keid B & C revolve around each other, and both revolve around Keid A. Thorpe discovers Vulcan is under attack by robotic scavengers. He follows the scavengers to Keid C, where they discover a Dyson Sphere under construction by microbots scavenging one part of the sphere to construct another. Andromeda explores the sphere, half the size of an entire solar system. Suddenly, the starship is attacked by the microbots, who see the starship as raw material. After narrowly escaping the bots, smaller spacecraft travel through the immense sphere, studying how such a structure could exist, and searching for the builders. They discover several primitive races inside-humanoid, feline, and reptilian. While studying these races, they discover hidden electronic uploads stemming from the original builders of the gigantic sphere.

As Thorpe begins to assemble a model of the sphere, he learns the Dyson Sphere's star is about to produce a superflare that could destroy all life inside the sphere-and even the Dyson Sphere itself. Can the explorers survive such an event? If so, can they save any of the sapient races, and will they succeed in removing the uploads of the sphere builders?.