Linc Hosler was sitting in a packed football stadium when the Flying Eyes appeared and cast their hypnotic power over half the crowd. Thousands of people suddenly began marching zombie-like into the woods where they vanished into a black pit. Linc used every resource of the Space Research Lab and the National Guard to destroy the Eyes. But nothing could stop them, for they proved immune to bullets and bombs. In desperation, Linc captured an Eye and found a way to communicate with it through his mind. He learned that radiation was fuel for the creatures' lives. And when they issued their terrible ultimatum: Explode a series of atom bombs to supply them with radiation or they would turn the world's population into mindless robots! It gave the world two harrowing choices—-self-destruction via fallout from the bombs or annihilation via the sinister Flying Eyes...