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A C.I.A. head uses an ex-undercover agent, Louis Mace, in order to penetrate a mysterious radio-active-laden flying saucer and obtain informations from the intruders, thanks to a hidden audio camera. But to fullfil his infiltration mission, Mace is turned into one of the outer space visitors.
Opening Narration: The race of Man is known for its mutability. We can change our moods, our faces, our lives to suit whatever situation confront us. Adapt and survive. Even among the most changeable of living things, Man is quicksilver-more chameleon-like than the chameleon, determined to survive, no matter what the cost to others... or to himself.
Closing Narration: A man's survival can take many shapes, and the shape in which a man finds his humanity is not always a human one.
Louis Mace: The scales of balance then... we are aliens to them. I'll survive, Dr. Tillyard.