Bats is a tired throwback to the days of the old B-movie Saturday matinee, when creepy, crawly creatures menaced society often because of science running amuck. In those films, it was radiation that made the critters what they were.
Bats takes the mad scientist and a government war project gone bad approach.
We know something is definitely wrong with the world, at least in the small West Texas town of Gallup, when two teens are attacked by something. Turns out the bat problem began when two flying foxes - a really big bat had escaped from a lab and latched onto the local bat population. It turns out the pair were not just any flying foxes, but had been genetically altered by a virus to become the ultimate weapon. What people have on their hands are a lot of very brainy bats with quite a bit of attitude. The rest of the film is mainly a collection of bat attacks on the town and on a deserted school where the heroes are holed up.