A severe arctic gale batters the fleet, forcing captains to fight extreme wind and waves. For the second time, a greenhorn's life hangs in the balance on the Summer Bay. The Saga crew seeks shelter at St. Paul, where tidal forces snap Jake's anchor.

Captains take on the steepest waves yet in an epic final surge to hit their quotas. Jake fights through a debilitating crew injury on deck. Josh gambles big on his crab count, while engine failure leaves Sig dead in the water.