Will Smith is diving head first into action, excitement and shark-infested waters, as he confronts his fear of the open seas and the open jaws of nature's fiercest predators.

The Great White Serial Killer returns and it's on a killing spree that may push the California Sea Otter to extinction. Investigators deploy an otter dummy to get a closer look and witness one of the most spectacular attacks in Shark Week history.

Scientists believe that monster sharks make their home under the Old Seven Mile Bridge. Fishermen claim that one of the sharks is a 18-foot long, one-ton great hammerhead named Big Moe. If this is true, he will be the largest hammerhead on the planet.