The crew of an experimental underwater nuclear base are forced to struggle for their lives when their explorations disturb a creature who threatens to destroy their base.
| Actor | Role |
|---|---|
 Taurean BlacqueCaptain Phillip Laidlaw | Captain Phillip Laidlaw |
 Nancy EverhardJoyce Collins | Joyce Collins |
 Greg EviganMcBride | McBride |
 Miguel FerrerSnyder | Snyder |
 Nia PeeplesScarpelli | Scarpelli |
 Matt McCoyJim Richardson | Jim Richardson |
 Cindy PickettDr. Diane Norris | Dr. Diane Norris |
 Marius WeyersJohn Van Gelder | John Van Gelder |
 Elya BaskinBurciaga | Burciaga |
 Thom BrayHodges | Hodges |
 Ronn CarrollOsborne | Osborne |
 Chris Walas(uncredited) | (uncredited) |