Sig and John co-captain The Time Bandit, sparking a gold rush for crab out west; chaos on the Titan Explorer forces Jake's crew to abandon ship.

After a deadly chemical leak forces Jake to abandon ship, Keith races to locate the Titan Explorer crew and save their ailing vessel; with Sig aboard the Time Bandit, Mandy takes the Northwestern's helm for her first-ever solo king crab season.

A typhoon brings monstrous waves and high winds to the west; Rick and Bob attempt to stitch a head wound in turbulent seas; John risks capsize to make a harbor entrance; an emergency tests Jake between his duties as captain and man of the house.

A brutal knife injury on the Northwestern leaves Sig scrambling. After one crewman quits, tensions explode on the Confidence until even the co-captain revolts. The Wizard faces a nightmarish mechanical failure when Keith's throttle fails in rough seas.

In treacherous western waters, Sig and Jake gamble on a daring new fishing strategy. Rick and Sophia attempt a perilous boat-to-boat transfer to save a quarter of a million dollars of crab. The fleet mourns the loss of beloved fisherman Nick Mavar.

Johnathan's dash to the dock halts as the Coast Guard boards the Time Bandit; Sig seeks a bigger biomass out west and convinces Rick to go to Adak to dig up his father's lost fishing spots; the Hillstrands attempt a high-risk harbor entry.