A unit of American military advisors in Vietnam prior to the major U.S. involvement finds similarities between their helpless struggle against the Viet Cong and the doomed actions of a French unit at the same site a decade before.

Fifty spaceships, each three miles across, hover ominously above Earth's major cities. The Visitors that emerge are humanlike in appearance and extend the hand of friendship. Our planet's resources are just what these aliens need to survive. And for its future survival, unsuspecting humankind will need... a miracle!

High profile fashion photographer Scott Bruin has been suffering from a series of increasingly disturbing and violent dreams in which he savagely attacks and murders a young woman. Fearing for his sanity, Scott begins to investigate these strange visions but slowly starts to believe that these all-too-real seeming nightmares might not be dreams after all and that the woman in them is in imminent danger.

In the future, the threat of global takeover by cyborg units has forced Earth to outlaw their use. But when four female androids are smuggled to Earth, Jack Ford is assigned to track them down. An adventurous chase takes him from the mean streets of Phoenix to the depths of New Angeles, an underwater city, and into the diabolical clutches of a maniacal kingpin and his criminal army.