 Years after his parents are killed by a megalodon (an enormous shark that has supposedly been extinct for millions of years), Dr. Spencer is obsessed with the idea of hunting down and killing the monster. He s assigned to investigate the destruction of an undersea research station with the crew of the Argus, a giant submarine Spencer designed himself. After a little searching the team realizes that it was indeed a megalodon that destroyed the base, and the hunt for the creature is on. Will the Argus and its crew have what it takes for Spencer to get his revenge?