A futuristic underwater sea-lab is having problems with a UFO that's parked between them and a nearby deep ocean trench. As they investigate, they attract the unwanted attention of a dangerous creature who puts the scientists and crew in danger.
as Commander Wayne
as Dr. Rene Peron
as Dr. LaSatier
as Dr. James
as Sandra Welles
as Hugh Maddox
as Tex
as Dr. Wilson
as Skipper
as Ho Lee
as Mike
as Ellis
as The Thing
