Winter descends on the mountains without mercy; Marty is trapped in 50 below, Morgan and Tom forge new alliances; Rich battles a rogue grizzly.

Morgan battles to stay afloat on a treacherous river run, Jason loses everything, and for Rich's dog team, routine training turns to live combat.

Tom defends his home against a wolf pack, Eustace attempts to turn trash into treasure, and Jason goes on a mission to feed his family.

A slip of the axe blade slices Morgan too deep; Marty targets a wolf pack on a killing spree; Tom digs out.

Morgan is sidelined while he gets back on his feet; Marty fights to stay in the game and Eustace makes a critical trade to protect his future.

Marty doubles down on a new strategy to keep from losing more ground; Morgan and Margaret defend what's theirs and Jason's hunt for land becomes an ordeal.Marty doubles down on a new strategy to keep from losing more ground; Morgan and Margaret defend what's theirs and Jason's hunt for land becomes an ordeal.

An early thaw puts Morgan's supply drop on thin ice; Marty hunts the beasts of Kodiak Island and Tom makes the most of his unprecedented winning streak.

Morgan slips up navigating the meltdown that's transforming the Alaskan wild; Marty's high altitude hunt takes him to the top of Kodiak Island's most treacherous peaks, and Eustace and Preston bring down a giant.

An early melt unleashes the local bears weeks ahead of schedule in the Great Alaska Range; Jason hunt for a home is finally over, and Eustace and Preston's race to the finish ends in ruin.

Morgan's horses go missing just as the local bears are waking for spring; Rich's marathon lion hunt turns into an epic chase and Tom goes after America's largest game.

Marty ends a failed season with a blockbuster catch; Tom stands his ground against a powerful beast and in Preston's final episode, he and Eustace fight fire with fire to lay down roots for the next generation.

Marty ends a failed season with a blockbuster catch; Tom stands his ground against a powerful beast and in Preston's final episode, he and Eustace fight fire with fire to lay down roots for the next generation.

Marty ends a failed season with a blockbuster catch; Tom stands his ground against a powerful beast and in Preston's final episode, he and Eustace fight fire with fire to lay down roots for the next generation.

Marty ends a failed season with a blockbuster catch; Tom stands his ground against a powerful beast and in Preston's final episode, he and Eustace fight fire with fire to lay down roots for the next generation.

Marty ends a failed season with a blockbuster catch; Tom stands his ground against a powerful beast and in Preston's final episode, he and Eustace fight fire with fire to lay down roots for the next generation.

Marty ends a failed season with a blockbuster catch; Tom stands his ground against a powerful beast and in Preston's final episode, he and Eustace fight fire with fire to lay down roots for the next generation.