In Alaska, Marty Meierotto makes a final push into the brutally cold conditions of his trapline to harvest the last of his furs, snap his trap, and fly home to his family. Mike Horstman carves a road into the side of a steep ridge to gain better access to prime hunting grounds. Daniel Peters pilots his boat through shallow waters and raging tidal currents while on a risky mission to trap wolves on the islands of Southeast. In Montana, Jake Herak faces an emergency on the mountain when his dogs brawl with an aggressive lion. Meanwhile, Paul Antczak overcomes a snowmobile breakdown to venture deeper into the forest near his new homestead, setting traps for bobcats and marten.

Lauro continues his quest to complete the Iditarod through the frozen interior of Alaska. Bret and Ivy pursue a bear into dangerously steep terrain. Daniel sets traps for wolves to protect the fragile deer population in the Southeast. Jake puts a marathon chase on a massive tomcat, ending in a showdown with the killer they've chased all winter. Paul grinds beaver carcasses to produce a valuable trapline bait.