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About
Planet Earth is a devastated wasteland, and what's left of humanity has colonized the Moon in domed cities. Humanity's continued survival depends on an anti-radiation drug only available on planet Delta Three, which has been taken over by Omus, a brilliant but mad mechanic who places no value on human life. Omus wants to come to the Moon to rule and intends to attack it by ramming robot-controlled spaceships into the domes. Dr. John Caball, his son Jason, Jason's friend, Kim, and a robot named Sparks embark on Caball's space battlecruiser on an unauthorized mission to Delta Three to stop Omus.
Theatrical
Aug 1, 1979
DVD / Blu-ray
Feb 11, 2003
Director
Writer
Producers
Music
Studio
CFI Investments, SOTTC Film Productions Ltd.
Where to Watch
Region
Apple TV Store
Rent from
HD
$4.99
Apple TV Store
Buy from
HD
$14.99
Amazon Prime Video
Stream included
HD
Included
Amazon Video
Rent from
HD
$3.99
Amazon Video
Buy from
HD
$9.99
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Prices last updated October 2, 2026. Pricing and availability may vary by region.
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Cast
Full credits →J
Jack Palance
Omus
C
Carol Lynley
Nikki
B
Barry Morse
Dr. John Caball
J
John Ireland
Senator Smedley
N
Nicholas Campbell
Jason Caball
A
Anne-Marie Martin
Kim Smedley
G
Greg Swanson
Sparks (voice)
W
William Hutt
Lomax (voice)
A
Ardon Bess
Merrick
L
Lynda Mason Green
Lunar technician
B
Bill Lake
Spacesuited man
