Jake battles a cracked tank as the norovirus spreads on the Time Bandit.
Sig and John chase giant kings as catastrophe forces Jake to abandon ship.
Keith races to locate the Titan Explorer crew and save their ailing vessel.
As a typhoon slams the fleet, Rick stitches a head wound in pitching seas.
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.
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.
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.
Ice encapsulates the Northwestern as cultures clash aboard the Wizard.