Beyond the eccentric orbits of Pluto and Neptune lies a vast, empty wilderness. There is nothing but the silence of space between the fringes of the Solar System and our nearest stellar neighbour, Proxima Centauri. The outer worlds of the Home System were only inhabited by Service and Scientific Personnel. Life for them was a constant routine war against an almost impossibly hostile environment.
Then something in deep space began to affect the fringe of the Solar System. The isolated Observers in their living domes were helpless. They could do nothing except report on the increasingly bewildering phenomena. As the strange effects worsened, several domes were abandoned. The menace from Beyond continued to encroach on the civilised planets as it head steadily earthwards...
What was the rational, scientific explanation for the thing that looked like an eye? Was it merely motiveless and purposeless, or was it guided by something sinister and more dangerous? Were men fighting a Cosmic Accident or an enormous Intelligence from out there...?