In the Revelation Mountains of Alaska, Marty is forced to make a dangerous river crossing to return to base camp. In Maine, Charlie battles a coyote to protect his new trapping ground. Tom hunts down a nuisance animal in Montana's Yaak Valley and Eustace races against a storm in North Carolina to bring his horses to shelter.

As the bitter cold pushes predators to the edge, Tom is caught in a close range battle while Rich goes head to head with a pack of wolves.