Villagers face a new threat, as outsiders descend on sacred hunting grounds. Charlie and James track a moose and make a disturbing discovery. Stan races to find a new source of fresh water after a vital spring dries up.

Charlie clears trail along a treacherous stretch of the Yukon with help from his daughter's new boyfriend. Later, Chris and Jessi hatch a plan to hunt with homemade weapons; and Lorene is rushed to a hospital in Fairbanks, Alaska, for emergency surgery.

A historic lack of snowfall prevents Stan from reaching his trapline; Charlie joins forces with Stan to defend an ancestral trapline from an unknown invader; and Courtney passes on dying native traditions to her daughter.

Villagers race to prepare for an early cold snap; Stan uses Yukon engineering to make a risky repair to his truck; Chris and Jessi enlist their dog to help them haul firewood; and Charlie tries to stop a deadly fire.

The countdown to the dark days causes a mad dash for food; Chris and Jessi venture onto thin ice to net whitefish; Stan and Charlie join forces on a perilous hunt for caribou; and Pat Moore turns to the town dump to feed his pigs.