Eons ago, a gentle race of giant aliens fled the planet Minerva, leaving the ancestors of Man to fend for themselves. Fifty thousand years ago, Minerva exploded, hurling its moon into an orbit about the Earth. In the 21st century, scientists Victor Hunt and Chris Danchekker, doing research on Ganymede, met a small band of friendly aliens lost in time, who began to reveal something of the origins of Mankind. Finally, Man thought he comprehended his place in the Universe..until he learned of the Watchers in the stars! (from publisher description)