The Kilchers continue the perilous cattle drive during the summer months; a hungry wolf that has infiltrated the herd.

As the warm weather dwindles, the Kilchers need to make a final push to catch as much fish as possible to fill their reserves to survive the winter.

The Kilcher's herd needs permanent protection from Alaska's wild predators so Atz sets out to build a proper fence; scouring for materials and transporting them through rough terrain.