When a super-robot discovers how to build his own superbombs, it becomes obvious that Earth is by no means the safest place for him to be. Dr. Fitzhugh, his designer, and Leda Crannon, a child psychologist acting as Snookums' nursemaid, agree to set up Operation Brainchild, a plan to transport the robot to a far distant planet. Mike the Angel Gabriel, Power Design has devised the power plant that is to propel the space ship Branchell to its secret destination, complete with its unusual cargo.
To some passengers a maiden voyage was a pleasure cruise; to others it meant a hope for new life. Only the Captain knew of its danger! The _Star Lord_ waited, poised for her maiden voyage. The gigantic silvery spindle, still cradled in its scaffoldings, towered upwards against the artificial sky of Satellite Y.
"Kor was... is. God. Knowledge." He had tried to convey this to the small creatures who had invaded his world, but they did not heed. Their ill-equipped brains were trying futilely to comprehend the ancient race memory of his people. Now they would attempt further to discover the forbidden directives of Kor. Horng remembered, somewhere far back in the fossil layers of his thoughts, a warning. They must be stopped! If he had to, he would stamp out these creatures who were called "humans."
At 4 a. m., a ray of light had been observed on the disc of the planet Mars in or near the "terminator"; that is to say, the zone of twilight separating day from night. The news was doubly interesting to me, because a singular dream of "Sunrise in the Moon" had quickened my imagination as to the wonders of the universe beyond our little globe, and because of a never-to-be-forgotten experience of mine with an aged astronomer several years ago.
On the day that the theft of the solar system's light begins, Burl Denning is with an archaeological expedition in the Andes. Within hours the U.S. Air Force has ordered the expedition to investigate the strange phenomenon that is causing a dimness and a drop in temperature throughout the world. This is the start of a fantastic adventure that takes Burl on the first circumnavigation of the solar system on the Magellan. Each planet-fall brings unexpected hazards, as the ship draws closer.