The Midwest USA is invaded by stingray-shaped alien slugs that ride on people's backs and control their minds in order to spread their dominion. Government agency reps Sam Givens, Andrew Nivens, and Mary Sefton must stop the aliens.

Top Cast

Donald SutherlandAndrew Nivens

Eric ThalSam Nivens

Julie WarnerMary Sefton

Keith DavidAlex Holland

Will PattonDr. Lawrence Graves

Richard BelzerNeil Jarvis

Tom MasonPresident Douglas

Yaphet KottoRessler