A giant asteroid is heading toward Earth so some astronauts disembark from a nearby space station to blow it up. The mission is successful, and they return to the station unknowingly bringing back a gooey green substance that mutates into one-eyed tentacled monsters that feed off electricity. Soon the station is crawling with them, and people are being zapped left and right!
Robert Horton
as Commander Jack Rankin
Luciana Paluzzi
as Dr. Lisa Benson
Richard Jaeckel
as Commander Vince Elliott
Bud Widom
as General Jonathan B. Thompson
Ted Gunther
as Dr. Hans Halvorsen
David Yorston
as Lt. Curtis
Robert Dunham
as Capt. Martin
Gary Randolf
as Cordier
Jack Morrisey
as Lt. Morris, Rocket Pilot
Eugene Vince
as Technician
Don Plante
as Technician
Linda Hardisty
as Nurse
