Plot: Bats, the result of a government experiment gone wrong, have suddenly become intelligent, vicious, and omnivorous, and are attacking people near Gallup, Texas. Bat specialist Sheila Casper and her assistant Jimmy are brought in but can they stop the bats before the military comes in and, in their ignorance, makes things worse?
Alternative Plot: When a population of bats in a small Texas town starts attacking the unsuspecting citizens, Dr. Sheila Casper (Dina Meyer), a zoologist specializing in the species, is called in to investigate. With the help of her assistant and the local sheriff (Lou Diamond Phillips), strange details about the bats begin to emerge: It's discovered that they are the product of a governmental experiment gone awry. With people dying and the military threatening to take action, a solution must be found.
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