As co-captain Mandy begins her own family, starting over in the land of their ancestors becomes an unexpected journey to rediscover a lost legacy.
Whilst fishing for king crabs, Sig discovers a surprise within his gear; he entrusts the 193-foot Stalbas to Jake while he and Mandy pursue a brand-new species to create a larger fishing empire.
Sig and Mandy go all in on a big change in strategy; when Captain Jake pulls up a king crab jackpot, he must choose whether to honor Sig's orders or go out on his own with millions on the line.
When Jake chases Russian kings far to the north, the Hansens must add a new boat to their Norwegian fleet for a chance at tanking the biomass.
Sig searches for secrets from a fishing legend; when Jake locates relatives, he puts together pieces of his family's past and finds unexpected answers about his own late father; Clark must prove can tank the crab on his own.
After guaranteeing a troll crab delivery backed by king crab, Sig must make good on his deal before the clock runs out; Jake makes peace with his late father's passing; Mandy finds she has an eye for traditional Norwegian cuisine.
Sig makes an ambitious deal for 25 tons of live king crab; Mandy hits the docks to buy a new boat; Sig and Jake scramble to the Russian line to find the migrating hoard; when Jake gets a line in his own prop, he must find a diver to save his shaft.
Thousands of pounds short of their million-dollar Norwegian goal, Sig and Jake steam far to the north to fill their tanks with Russian kings; when Clark finds uncertain depths at shore, Mandy captains a new boat.
After several boats hit the rocks in salmon season, Sig makes an unplanned trip to Alaska where son-in-law Clark is helming the Northwestern; Sig finds Clark has his hands full attempting to deliver a million-dollar windfall of fish.