Sent by the U.S. government to recover top-secret cargo, an intrepid special ops team (led by the curvaceous Dr. Carly Ryan) boards a stranded military submarine, only to discover that all of the crew members -- save one -- have been eaten alive by mutant scorpions. With the help of the sub's sole survivor, Dr. Ryan and her team work their way through the vessel's maze of mayhem. But has the deadly mutation already begun to spread?