When the prehistoric warm-water beast the Crocosaurus crosses paths with that cold-water monster the Mega Shark, all hell breaks loose in the oceans as the world's top scientists explore every option to halt the aquatic frenzy. Swallowing everything in their paths -- including a submarine or two -- Croc and Mega lead an explorer and an oceanographer on a wild chase. Eventually, the desperate men turn to a volcano for aid.

That infamous whale is bigger, badder and a whole lot stronger in this sci-fi reimagining of Herman Melville’s classic tale of the battle between man, sea and sea creature starring “Xena” alum Rene O’Connor as the (traditionally male) narrator. But the boat — now a high-tech submarine — is also bigger, and Capt. Ahab is as determined as ever to settle the score and take down the mighty sea mammal that maimed him.