In the season premiere, the captains find a rare strain of red King crab in the north amid crushing ice and unhappy storms. Sig deploys an underwater drone to pinpoint the horde. Jake revives the legendary Cornelia Marie to battle perilous northern seas.

With no port for shelter, Johnathan fights to protect his crew as Typhoon Halong pounds the northern grounds. Rick's Red King jackpot halts when a line fouls his prop. In 25-foot seas, Jake discovers the limits of the Cornelia Marie's fishing operations

After joining forces, Sig and Jake set their boats on a collision course. Crew tensions explode on the Time Bandit, leading Keith to lure Freddy back to the Wizard. When the Aleutian Lady's exhaust stack bursts into flames, Rick must fight fire with fire.

When the Time Bandit's freezer fails, John makes an emergency trip to St. George Island to feed his hungry crew. Sig and Jake lure crab to their own side of a maritime boundary. Rick battles a perplexing engine issue amid the biggest waves of the season.

A dream leads John to a crab hotspot, but a rival trawler shares the vision for filling its own massive nets. Keith's crew races to save the Wizard as seawater breaches the engine room. On the Northwestern, an erratic crane drags Clark across the deck.

When a rogue wave pummels the Wizard and sidelines its crew, Keith reconsiders the risks he's taking. Racing to make an offload, Sig loses a deckhand to a crushed toe. Rick finds crab but needs new tactics to fish a seafloor bristling with old crab pots.