When yet another Mega Shark yields out of the depths of the sea, world militaries go on top alert. Ocean traffic grinds to a standstill as everyone else lives in fear of the insatiable creature. Out of options, the federal government unleashes the very best Mecha Shark project -- even a mechanical shark assembled to own the exact characteristics as Mega. A couple of scientists pilot the monster that is mechanical while they fight Mega at a pitched battle. However, when mechanics cause the Mecha to go after humans, the scientists must guide Mega to Mecha assured that the two titans will kill each other - or risk large worldwide devastation.