Genetically mutated bats escape and it's up to a bat expert and the local sheriff to stop them.
| Actor | Role |
|---|---|
 Lou Diamond PhillipsSheriff Emmett Kimsey | Sheriff Emmett Kimsey |
 Dina MeyerDr. Sheila Casper | Dr. Sheila Casper |
 Bob GuntonDr. Alexander McCabe | Dr. Alexander McCabe |
 LeonJimmy Sands | Jimmy Sands |
 Carlos JacottDr. Tobe Hodge | Dr. Tobe Hodge |
 David McConnellDeputy Wesley Munn | Deputy Wesley Munn |
| MMarcia DangerfieldMayor Amanda Branson | Mayor Amanda Branson |
 Oscar RowlandDr. Swanbeck | Dr. Swanbeck |
| JJuliana JohnsonEmma | Emma |
 Ned BellamyMajor Reid | Major Reid |
 George GerdesChaswick | Chaswick |
 James SieSergeant James | Sergeant James |
| TTim WhitakerQuint | Quint |
| JJoel FararBartender | Bartender |