Jack Scalia, R. Lee Ermey, Ray Wise, Deborah Adair, John Toles-Bey, Ely Pouget, Emilio Linder, Tony Isbert, Frank Braña, Edmund Purdom, Salvador Sáinz, Pocholo Martínez-Bordiú, Garrick Hagon, James Aubrey, Derrick Vopelka
An experimental submarine with a very experienced crew, the "Siren II" is sent to find out what happened to the "Siren I" after it mysteriously disappeared in a submarine rift. Things go awry when they begin to find things that shouldn't be there...