Using custom boats and expert aim, four generational harpoon fishermen compete to land the first monster bluefin tuna of the season, worth thousands.

Captains Joe and Tyler hit bluefin gold as struggling strongman Niko Chaprales changes tactics in hopes of living up to his famous father’s legacy.

Captain Joe takes his sons to sea aboard the Redrum, only to witness nature at its rawest. Niko hunts the season's biggest bluefin yet, worth $10,000.

As the fleet spots the first giants, Joe fights for his lead over Niko & Tyler but all bets are off as old-timer Bill joins the derby. Emmett struggles with the choice to fish without a plane. When Dylan gets a $6K tuna, holding onto it is another matter.

As the bluefin fishery reaches its mid-season peak, three centuries-old fishing strategies compete for dominance; Joe banks on instinct, Tyler uses science to gain the upper hand, and strongman Niko relies on legacy -- but nobody relies solely on luck.

With the advantage of spotter planes, veteran Tyler and young gun Joe battle for the most monster bluefin until Joe helps strongman Niko get back into contention; when Niko's zapper fails, Tyler steps in to save the day.