In northern Saskatchewan, the Barks have been trapping as a family for years, but now, the two oldest sons are heading off into the wild on their own, splitting up their family for the first time and tackling the wilderness' many obstacles separately.
Dale and Shane face a decision: find heat and eat later or go hunt risking another frigid night in the wild. Kole struggles to step into his new role as Randy's right hand. A fallen tree on the Barks' skinning shed raises concerns for the whole family.
The boys go ice fishing for bait, but it quickly takes an unexpected and potentially fatal turn, while the Barks' help Grandma and Grandpa Griz avoid having their cabin flooded by clearing out a beaver dam, bush style - with some dynamite.
Randy and Kole check their line in the bog hoping to get done in time for Kole's birthday party, but Kole ends up lost and at risk of having to spend the night in the freezing cold. Dale and Shane also become stranded on the way home for Kole's birthday.
Dale and Shane's meat is taken by wolves in the winter; Randy and Kole have a wolf problem too.
To avoid over-trapping their area, Randy and Kole go north to set up a new trapline. The boys also explore north of their cabin, but after a snowmobile wreck, they must decide whether to take a 4-day walk home or press forward in search of Randy and Kole.
A fluke accident with their gas can sends Randy and Kole into civilization to replenish. Dale and Shane stumble upon evidence of a wolverine, the highest prize a trapper can get. While on the hunt, they spot a signal flare and try to track its source.
With Dale and Shane nearing the end their 90 days in the wild, Randy begins having second thoughts about calling his sons back home, but health concerns with a family member force the boys to make a painful decision.