Marty rushes to make the most of an extra pair of hands. Tom's grandson comes for a visit but soon learns that there's no such thing as vacation in the Yaak. Charlie heads out on a hunt for shed moose antlers. And in Montana's Ruby Valley, Rich Lewis' dogs are hot on the scent of a mountain lion when their hunt takes a dangerous turn.

Charlie spends the night injured and alone in Maine. In Montana Tom investigates signs of a predator lurking too close to home. Eustace rushes to raise money to make his loan payment. And in Idaho, new mountain man George Michaud tries to make a living running his dog sled through the peaks of the mighty Tetons.