While working in a greenhouse, a man receives an insect bite after touching an exotic plant. Immediately, he falls ill and is taken to an emergency room where the doctors diagnose him as suffering from an unknown bacteria, and a strange parasite which emerges from his mouth as a large slimy wormlike creature. Soon, there are more cases of bacterial infection, but the more immediate problem for the hospital is the wormlike creature which after accidental exposure to a genetic growth stimulant grows to monstrous proportions and starts a reign of terror and bloodshed in the hospitals abandoned wing.
| Directing | William Fruet | Director |
| Writing | George Goldsmith | Writer |
| Production | Michael Masciarelli | Executive Producer |
| Production | Anne Tait | Casting |
| Sound | Paul Novotny | Original Music Composer |
| Writing | Chris Koseluk | Writer |
| Production | Risa Gertner | Associate Producer |
| Editing | Michael Fruet | Editor |
| Visual Effects | Steve Neill | Creature Design |
| Production | Tom Fox | Executive Producer |
| Production | Sandy Howard | Executive Producer |
| Camera | Brenton Spencer | Director of Photography |
| Visual Effects | Michael F. Hoover | Creature Design |
| Visual Effects | Mark Williams | Creature Design |
| Art | Reuben Freed | Art Direction |
| Crew | Bruce Barlow | Makeup Effects |
| Visual Effects | Todd Masters | Creature Design |
| Production | Martin Walters | Producer |
| Production | Paul Bengston | Casting |
| Sound | Patrick Coleman | Original Music Composer |
| Production | David Cohn | Casting |
