As spring hits Alaska, it brings new challenges for the offgridders as they scramble to repair their cabins and homesteads. On the railroad, the freight team prepares their most dangerous load of the year, a cargo of explosives.
When temperatures rise and breakup hits Alaska, a new set of problems threaten lives on and off the rails. Jim and Nancy journey to an abandoned cabin and discover that a bear has taken up residence. Cathy and Larry are in search of an emergency vehicle.
A magnitude-4.2 earthquake threatens to bring the railroad to a standstill and derail a speeding freight train. Steve and Cassie Brosius race to build an emergency shelter to protect their young baby. Dave Weems' nieces visit to sample life in Alaska.
A porcupine infestation threatens to leave Nancy and Jim without electricity. Dave Weems' city-living nieces hunt for their own supper. On the railroad, an emergency crew battles blocked bridges to make way for a shipment of valuable military equipment.
Steve, Cassie, and their baby, face down a threat to their food supply, Dan Mulwhinney must make a grueling 5 hour hike in the wilderness. On the railroad an ice storm threatens to derail the Alaska Railroad's scheduled freight train.
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