During a Space Shuttle mission a satellite rams a unidentified flying object. The UFO afterwards performs an emergency landing in the deserts of Arizona. However the White House denies its existence because of the near presidential elections. The UFO is brought to the secret Hangar 18 and the accident is blamed on the incompetence of the astronauts Bancroff and Price. But the two fight against this and try to hunt down the UFO.
Darren McGavin
as Harry Forbes
Gary Collins
as Steve Bancroft
Robert Vaughn
as Gordon Cain
James Hampton
as Lew Price
Philip Abbott
as Frank Morrison
Joseph Campanella
as Frank Lafferty
Pamela Bellwood
as Sarah Michaels
Tom Hallick
as Phil Cameron
Steven Keats
as Paul Bannister
William Schallert
as Professor Mills
Cliff Osmond
as Sheriff Barlow
Andrew Bloch
as Neal Kelso
