Richard Greico leads a team of electrical workers who stumble across a terrifying parallel universe. While investigating a strange power source in an abandoned building, the workers find themselves sucked into an underworld teeming with massive, man-eating, spider-like monsters. The bloodthirsty arachnid-human hybrids stalk and kill their victims one by one, leaving the dwindling group of survivors to fight back with just their wits and a handful of primitive weapons.
| Writing | Grenville Case | Writer |
| Directing | David Wu | Director |
| Writing | Robinson Young | Screenplay |
| Art | Ed Hanna | Production Design |
| Production | Derek Rappaport | Producer |
| Costume & Make-Up | Ruth Secord | Costume Design |
| Art | Jon P. Goulding | Art Direction |
| Sound | Lawrence Shragge | Music |
| Editing | David Wu | Editor |
| Production | Nelleke Privett | Casting |
| Camera | Richard Wincenty | Director of Photography |
| Visual Effects | Allan Magled | Visual Effects Supervisor |
| Visual Effects | Michael Wile | Visual Effects Technical Director |
| Sound | Kris Fenske | Sound Designer |
| Sound | Devan Kraushar | Sound Effects Editor |
| Visual Effects | Dong Yon Kang | 3D Animator |
| Camera | David Perkins | Camera Operator |
| Sound | Rich Walters | Music Editor |
| Visual Effects | Michael Kowalski | Visual Effects Producer |
| Sound | Hugo DeLaCerda | Sound Re-Recording Mixer |
| Sound | Iain Pattison | Sound Re-Recording Mixer |
| Sound | Paul A. Sharpe | Sound Re-Recording Mixer |
| Camera | Joe Strazzeri | Key Grip |
| Art | Emir Geljo | Assistant Art Director |
| Art | Mary Arthurs | Property Master |
| Sound | Dario DiSanto | Foley Editor |
| Lighting | Mark Berlet | Gaffer |
| Visual Effects | Shervin Shoghian | 3D Animator |
| Sound | James Wallace | Sound Effects Editor |
| Directing | Megan Banning | First Assistant Director |
| Crew | Charles Taylor | Armorer |
| Sound | Brian Campbell | Dialogue Editor |
| Camera | Ben Mark Holzberg | Still Photographer |
| Lighting | Loreen Ruddock | Best Boy Electric |
| Sound | Sonia Wisgo | Music Editor |
| Visual Effects | Daniel Lu | 3D Animator |
| Art | Ian Patrick McAllister | Assistant Art Director |
| Crew | Steve Lucescu | Stunt Coordinator |
| Crew | Regan Moore | Stunts |
| Crew | Edward A. Queffelec | Utility Stunts |
| Crew | Brian Jagersky | Stunts |
| Crew | Maxine Dumont | Stunt Double |
| Production | Paul M. Leonard | Associate Producer |
| Production | Dara Cohen | Executive Producer |