Something was terribly wrong in the distant man-made Spondylus star system. One by one, the planets' central life-support computers had been infected with a life-threatening virus while the planets' surfaces had been overrun with computerized dinosaurs known as Robosaurs. Under attack in his laboratory on Alpha Planet, Professor Proteus, mastermind of the Spondylus System and founder of the Robosaur project, suddenly realized that this deadly sabotage could only be the work of his former partner, the deranged Dr. Brainius.