Joel builds a watercraft capable of carrying his team and supplies across the Alpine Lake.

Tamra builds a shelter capable of keeping her team safe during the heavy rainfalls present in the Spruce Forest, as well as a bridge to grant access across a crucial stream running through the forest.

Matt builds a seasonal hunting camp in the Chalk Creek hunting grounds.

The lobster fishing fleet prepares for another tough season as Keith points his vessel towards an oncoming storm. Then, Tim struggles with a boat malfunction and Joel bides time until he can get his dragger boat into the lobster grounds.

The captains race to get the pots out of the way of the dragger boats to avoid having their trawls destroyed. Then bad weather leads to a dangerous accident on the Captain Bligh and the Courtney Elizabeth is plagued by failing equipment.

Tensions mount as the lobster grounds finally open up to the dragger boats. Then the Captains face engine failure, tangled gear and a mutiny.

A rogue wave hits the Direction, Norbert goes to war with a rogue lobsterman and Tim fights with his inexperienced crew after a deckhand's dangerous mistake. Then Keith pushes the crew of the Captain Bligh for two days without sleep.

The lobsters are on the move as colder weather approaches and making crabs a much more likely catch. Tim faces an uphill battle with an unruly deckhand, Grant hands over control of his boat and Keith gambles with old bait.

The lobstermen battle Mother Nature's fury as the biggest storm of the season hits. Norbert is jolted awake by an overnight emergency, Keith struggles to bring in any sort of catch and the storm wreaks havoc on the Courtney Elizabeth.

The Captain Bligh invades another boat's territory while Captain Joel faces a power outage and a visit from the Environmental Police. Also, Tim struggles with life as a lobsterman while Norbert mentors an aspiring captain aboard the Debbie Ann.

As lobster season draws to a close, Mother Nature takes a final stand. John has a dangerous final trip aboard the Direction, Joel hits the jackpot and Norbert and Tim both face important decisions.

The 2008 Iditarod race begins. Returning champion Lance Mackey already has a hitch in his plan. Iditarod icon DeeDee Jonrowe loses her dog team outside a checkpoint. The mushers prepare to face the dreaded Alaska Range.

The mushers cross the treacherous Alaska Range. Jonrowe faces "the Step," where she was injured last year. Injury also causes Mackey's lead dog to be dropped. Martin Buser takes a strategic rest at Salmon River before beginning the trek again.

With the Alaska Range behind them, mushers now must rest -- a strategy all its own. Mackey, already down a lead dog, cares for his exhausted team. Jonrowe, nursing a virus, is first to the half-way mark, winning Yukon Gold, but at what price?

Mackey makes up for lost time while King devises a new plan. Eskimo Nelson debates whether to withdraw from the race. The Busers separate to allow former champion Martin a chance to go for the gold.

Mackey continues to break trail for rival King but is catching on to King's game. Rookie musher Holt, making a slew of beginner's mistakes, has to decide whether he can carry on or if he will succumb to the treacherous nature of the Iditarod Trail.