A space phenomenon that even devours light draws Alpha to its center. The Alphans encounter what may be the origins of life on Earth. The runaway moon's uncontrolled flight comes to a sudden halt at the outer limits of space, and Alpha's power plummets when it approaches an unidentified planet. An alien ship bound for Earth lands on the runaway moon, its crew frozen-down for the long journey. Commissioner Simmonds, who was visiting the moon when it broke away from Earth, insists on a chance to go home aboard the vessel.
Alpha then encounters one of the strangest mysteries of the universe in a living machine.
Zenno abducts Koenig to become the subject of study as a spaceman of an earlier life form. After an alien attack devastates Alpha, John and Helena go to the hostile planet to plead for mercy on the survivors. An alien spaceship locks Alpha into an orbit and proceeds to steal classified data from its computer banks. The Alphans come upon a fleet of missle-like objects that imprison the frozen bodies of exiles from another planet. A technological breakthrough gone awry lands John, Helena, and Alan in plague-ravaged 14 century Scotland.