It's bluefin tuna season off the coast of the Carolinas, and the visiting fleet is excited to haul in the lucrative giants again. But to profit, they'll have to test new fishing techniques, work in treacherous, unpredictable local waters, and face the highly-skilled and less-than-welcoming southern fleet. The local boats are not happy about sharing the waters; this war will be anything but civil.

Known as the Graveyard of the Atlantic, the North Carolina coastline is littered with thousands of shipwrecks - a warning to all captains and crews that anything can go wrong at anytime, for anyone. As the bluefin season takes off, the treacherous waters of the Outer Banks claim another victim, and the Fishin' Frenzy and Hot Tuna are first on the scene.

Unpredictable waters continue to cause problems for boats in their battle for bluefin tuna in the Outer Banks. Captain Britton Shackelford is in for the fight of his life as a family member deals with health concerns. Captain Greg Mayer is in a familiar place on top of the leaderboard and Captain Dale Lisi sets out early to try to catch up. Pressure builds as the fishing season slips away.

Four weeks into the fishing season, the fishermen of Gloucester, Massachusetts, are desperate for bluefin tuna. The fishing migration is in an unpredictable state, so the captains resort to espionage for information. Though the captains engage in tactics that provide them with advantages, they face some unexpected setbacks. They discover information about the bluefin tuna...and each other.

The fifth week of the fishing season becomes a battle for the best fishing spots. The waters turn turbulent as boats go head-to-head to prove their superiority. When old and new rivals clash on the high seas, the pressure is on to land a fish first. As pressure mounts on Gloucester's bluefin tuna fishermen, captains will do whatever it takes to land a paycheck in their successful fishing spots.

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Winter kicks into high gear in the Outer Banks, creating dangerous conditions at sea. A snowstorm, fog, fierce winds and big seas force every captain to choose between safety at shore and risking it all at sea to catch more bluefin tuna. Every time the fleet goes out to catch, they must fish fast and return safely before the next weather system hits.

Before the fishing season comes to a close, the Outer Banks captains must race against time to prove themselves. The crews are desperate to produce a few last catches that could make all the difference in their ship's status in the fleet. Every bluefin secured is an opportunity to get ahead and make a profit. The captains must battle time as well as the unforgiving Oregon Inlet of the Outer Banks.

Captain Tyler McLaughlin has stunned the fleet with his surprise comeback, as the other captains struggle to bring in a catch. Time is running out, and the boats must stay out overnight in order to turn their fortunes around. Captain Greg Mayer catches a lucky break, but only time will tell if it's enough to put him back on top.

It's the final days of the fishing season, and each captain is desperate to bring in one last catch. Greg Mayer and the crew of the Fishin Frenzy need to bring in a monster catch to be the top boat for the third year in a row, but time is running out. Dave Marciano's reputation is at stake, with just one more chance to bring in a fish this season.