AllMovie

Spencer Northcut (Antonio Sabato, Jr.) quite reasonably never forgot the day he witnessed his family being mauled and eventually killed by a prehistoric shark on what was meant to be an innocent boat trip. Obsessed, Spencer builds himself a submarine in hopes of setting out to find and kill the bloodthirsty shark. At first, it looks as if he'll never have the chance--the research group in charge of the sub refuses to let him board his own creation, until they themselves are killed by the same shark responsible for the death of Spencer's parents. Unhindered, Spencer leaves in anticipation of finding the shark and ending a very personal grudge.