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A botched science experiment unleashes a destructive otherworldly force with the power to devour the planet in this science fiction disaster thriller starring Judd Nelson and Kristy Swanson. Science has finally gone too far, and as a giant black hole opens up over St. Louis, the terrified denizens struggle to escape the all-consuming void by any means necessary. As General Ryker (David Selby) prepares to lob a heaping helping of nuclear warheads at the rapidly expanding hole, scientist Eric Bryce (Nelson) and his assistant Shannon (Swanson) soon discover that the hole has also provided passage for an interstellar stalker of the most unsavory variety. Now, with a murderous alien on the loose and the fate of the world looking grimmer by the minute, Eric and Shannon must destroy the savage visitor and reverse the effects of the black hole before the increasingly unstable General Ryker carries out his explosive final solution.