Two guys and a girl are on vacation in Spain. On their way to Madrid, they run across the small town of Duarte, where a Skylab fell four years prior. Unfortunately, microbes from the station didn't burn up upon re-entry as originally assumed. The townspeople are being infected by the alien microbes, turning into deranged, beer throwing hosts for alien predators.
Fun film is a bit slower going than you'd expect, spending time on the characters' love triangle. Highlights? We briefly meet a family including a guy who sounds like a Three Stooges reject. There's a groovy scene with a masked wacko and a big truck that tends to teleport. There's also a smartass bearded guy who's awesome and isn't in the film nearly as long as he should be. You don't see much of the creatures themselves, but when they appear, the effects are good. Think the chestburster from Alien with spider legs.