
The show takes place from 1944 to 2002 and follows the lives of three families: the Crawfords, who seek to cover up the Roswell crash and the existence of aliens; the Keys, who are subject to frequent experimentation by the aliens; and the Clarkes, who sheltered one of the surviving aliens from the crash.






Capt. Russell Keys returns home a changed man after his World War II bomber plane is besieged by glowing orbs; ambitious Capt. Owen Crawford investigates an air crash in Roswell, N.M.
Part 2 of 10 follows the evolution of two boys with extraterrestrial connections---Jesse Keys, whose father was kidnapped by aliens, and Jacob Clarke, who was fathered by one.
With his UFO project in jeopardy, Col. Crawford intensifies his search for alien hybrid Jacob Clarke, whose powers are becoming erratic; alien abductee Jesse Keys reunites with his father and offers himself to Crawford as a test subject.
Crawford's sons Eric and Sam learn the truth about their father's involvement in the UFO project after Owen is ousted; drug-addled Vietnam vet Jesse is haunted by his abductions.
Eric Crawford wrests control of his father's old project and teams with an amoral scientist to hunt down Jesse and Jacob, who visits his dying mother and shares his secret with cynical Tom
The children of Jesse Keys and Jacob Clarke age under alien guidance, while Eric, now ousted from the UFO project, seeks a connection between the kids and the extraterrestrials.
Charlie learns his connection to Lisa, whose daughter is sought by Dr. Wakeman and his lover, Mary Crawford.
Gen. Beers dismisses Mary Crawford from the project and kidnaps Allie to lure the aliens into a trap, while Charlie and Lisa embark on a desperate search for their daughter.
Charlie and Lisa search for Allie as the military probes the alien craft; Owen opens his mind to Mary
Charlie compels John to reveal the aliens' plans for Allie, while Mary's pursuit of the child turns murderous.