Far away from civilization, using survival skills and sheer cunning to stay fed, clothed, and alive, the Mountain Men pick up the pieces in the wake of last winter's Great Polar Vortex and gear up for whatever unpredictable Mother Nature has in store for them next. This season, Marty, Tom, Eustace, Rich, Kyle, and new mountain man Morgan are preparing early for the long winter ahead. They're fortifying their homesteads and stocking up on supplies, but as global weather patterns continue to change and wreak havoc around the world, the Mountain Men will be forced to face the chaos head-on and, if they are to survive, they too will have to adapt or die.