King crab season begins with an infusion of fresh blood into the fleet. Challenging the veteran skippers are two youngsters: Scott Campbell Jr., who helms the Seabrooke and first-time captain Elliot Neese on the Ramblin' Rose. Following the death of their father, brothers Josh and Jake Harris are tested by the Cornelia Marie's new skipper.
Across the Bering Sea crab fleet, bad fishing causes high tensions and low morale. Hoping to resurrect the storied fishing success of the Cornelia Marie, the Harris brothers and new skipper Derrick Ray pull their first strings of the season. The Seabrooke and the Ramblin' Rose experience polar opposites of fishing fortune on the grounds: One hits it big while the other misses completely.
Jake Harris gets a sink-or-swim lesson on driving the Cornelia Marie, and danger strikes the Wizard when a crew member gets caught in the line. On the Seabrooke, Captain Scott "Jr." Campbell defies the fishing odds by pulling up full pots, and the Ramblin' Rose's Elliott Neese realizes that his crab bounty could die in the tanks unless he makes a difficult choice.
A serious injury forces a crew member to his bunk after the crane breaks on the Kodiak, and the Seabrooke's greenhorn has a mental breakdown. The crew of the Cornelia Marie must put aside their differences to seek cover from a massive Bering Sea storm.
Two crew members nearly come to blows on the Northwestern. Captain Johnathan Hillstrand on the Time Bandit takes a massive gamble on barren grounds to find crab, and the greenhorn aboard the Seabrooke goes into a tailspin, leaving skipper Scott "Jr." Campbell in a bind.
In the midst of a rough King Crab season, a mutiny transpires on the Cornelia Marie while mental and physical breakdowns plague the crew of the Kodiak. A rogue wave threatens the Time Bandit and a Wizard deckhand summons the wrath of captain Keith.
The police are called in after a confrontation on the Cornelia Marie while a debilitating injury to a Kodiak deckhand ends his career for good. An injury onboard the Ramblin' Rose causes the rookie skipper to have a change of heart.
The King Crab Season closes with a fierce arctic storm, a spectacular prank on the Northwestern by the crew of the Time Bandit and the departure of one of the fleet's most revered fishermen.
Opilio season brings massive change to every returning boat. Edgar Hansen finally says goodbye to the Northwestern, a new captain boards the Cornelia Marie, and the entire fleet is shut down by one of the largest Arctic storms in history.
As the fleet battles an epic Arctic hurricane, ice and injuries have the captains considering desperate measures. On the Wizard, a bloodied deckhand has Keith Colburn moving from skipper to doctor. Freezing spray spooks the Seabrooke into an emergency pot drop on the edge of nowhere, and Jake Anderson hits a few hurdles in his campaign to replace Edgar Hansen on the Northwestern.
As another winter storm rips through the crab grounds, the Ramblin' Rose makes an all-or-nothing gamble, the Time Bandit courts danger at the dock, and a crewman on the Northwestern suffers a bloody, nose-breaking blow.
A loose pot turns into a half-ton wrecking ball on the Kodiak while a crewman on the Seabrooke is nearly crushed by ice. On the Cornelia Marie, the new skipper courts mutiny with a move to untested fishing grounds.
A captain and a deckhand clash over a crippling lack of bait on the Cornelia Marie, and Ramblin' Rose skipper Elliott Neese attempts to fix a possible season-ending breakdown. The Time Bandit's soft-spoken greenhorn goes to the Hillstrands' "Pirate School."
The treacherous waters off St. Paul Island make offloading crab a terrifying necessity for several boats. A harbor surge snaps lines on the Wizard, and Jake Anderson is rewarded with the task of steering the Northwestern safely to dock. Another greenhorn walks off the Seabrooke in a cloud of shame.
As opilio season winds down, two exhausted crewmen on the Time Bandit nearly come to blows. The skippers of the Seabrooke and the Cornelia Marie suffer debilitating injuries, and the captain of the Wizard erupts and physically assaults an unlikely victim.
The Bering Sea fleet finishes the season with big pots and big paydays. The Seabrooke captain fights an agonizing illness, and the Northwestern takes revenge on the Time Bandit for a humiliating prank. The Cornelia Marie comes home from what could be its final season of fishing.