When the government closes the King Crab fishery, captains must save an industry they worked so hard to create. Sig pursues invasive Russian King Crab in Norway; John, Josh and Casey chase rising prices for a new species, and Jake mortgages the Saga.

Captain Sig battles the elements to launch his new King Crab operation in Norway. Facing an Arctic storm, Johnathan sets pots deeper than ever. On the Patricia Lee, Captain Rip Carlton faces disaster when a deckhand gets crushed by a one-ton anchor pot.

Desperate to reach helicopter range before his deckhand dies, Captain Rip charges into an Arctic storm to attempt the riskiest USCG rescue in recent history. Sig takes his first Norwegian rogue wave, while John struggles to save the Time Bandit.

Sig struggles with a Norwegian crewman who thinks he knows more than the captain. Captain Wild Bill fights to save his boat from the rocky Norwegian coastline with a line snarled in his propeller. Keith's greenhorn faces a unhappy brush with death.

When Shyanne discovers a serious breach on the Saga, Jake and his crew scramble to save it from capsizing. In Norway, Sig drops pots on Russia's western line. As canneries close their doors, Josh and Casey call in a last-minute favor from Johnathan.

Sig finds the motherlode in the land of his forefathers, but his quest may cost him getting home for his daughter's due date. Josh's brother Shane gets caught in a line tied to a sinking pot and Rip faces a crisis when his greenhorn blacks out on deck.

Johnathan searches for a pot of Golden Kings at the end of a double rainbow. A medical mystery confounds Captain Rip when his greenhorn regains consciousness on the Patricia Lee. Keith partners with Josh and Casey until John steps in.

Johnathan sets mile-deep pots and pulls up an unknown species. Jake faces reality when his niece, Shyanne, gets injured on the Saga. With Mandy's due date approaching, Clark takes the helm in Sig's wheelhouse to help tank the Hansen family Bairdi quota.

Mandy's pregnancy complication forces Sig and Clark to reconsider their stand. Jake and Rip team up in deep waters to battle powerful Aleutian tidal currents.

Johnathan risks losing his entire live catch when the Time Bandit ventures into fresh water. Josh experiments with glow sticks to attract crab at the darkest depths.

With dock prices spiking, the fleet races to deliver. Jake witnesses a freighter severing his longline, forcing the Saga crew to drag the bottom for a valuable string of pots. Rip helps Johnathan locate the motherlode only to pay with a broken block.