Venture into the dark waters of the Bering Sea with eight crab fishing boats and their crews to experience one of the world's most dangerous and deadly professions. Captain Sig Hansen of the Northwestern returns to match his skills against his old rival, Phil Harris of the Cornelia Marie, and a new challenger, rookie captain Blake Painter of the Maverick. With rough waters and fierce weather, the captains and their crews are pushed to their limits of mental and physical endurance in their search for the elusive red king crab and opilio crab.