With several family legacies going back generations, fishing is personal for the Gloucester captains. And as the competition between the OGs and the tourists heats up, Gloucester captains rely on family ties. Two captains share a bond as one faces the loss of his father while another grieves. Meanwhile, three generations fish together on one boat in an epic battle for bluefin.

The Gloucester fleet is used to dominating its home turf, but as the newcomers begin to come out of a long dry spell, the competition starts to heat up. Summer weather brings a pack of "googans," or recreational fishermen, to Gloucester waters, and the captains are forced to test out different fishing spots in order to escape the crowds.

Just when the captains begin to hit their strides, bad news reaches the fleet: The bluefin markets are oversaturated, threatening to shut down the fishery. With large paychecks becoming fewer and farther between, the captains are on edge as they try to maintain momentum in a dire market. Every catch matters, because their next fish could be their last.