A college professor takes his students on a field trip to see alien sightings in rural Oklahoma and to check out mysterious cattle mutilations.The group runs into a half-dead cow with its flesh ripped off,a flying saucer and a farmhouse with an old hermit named Oliver Matson.They find themselves having to fight for their lives as they get attacked by stop-motion animated alien monsters obviously inspired by the works of Ray Harryhausen.Extremely cheesy and cheerful piece of local sci-fi/horror effort made in Oklahoma by Larry Thomas.The make-up and gore effects are pretty decent.I also enjoyed the stop-motion creatures and claymation effects.The acting is amateurish and the script is fairly silly,but this is a perfect movie to watch with the bottle of cold beer.7 out of 10.