 It was the first film released by Destination Films, while Columbia Pictures distributed outside of United States

The plot concerns a hostile swarm of genetically mutated bats who terrorize a local Texas town and it is up to zoologist Sheila Casper, who teams up with town Sheriff Emmett Kimsey, to exterminate the creatures before they take more lives.The film was panned by several critics for its campiness, subpar special effects, underdeveloped characters, and unfrightening tone.However, the film has developed somewhat of a cult following.