Francis Roberts is stranded miles outside of town after his snow mobile breaks down. But when his father finds him, he's in more trouble than ever before.

Stan Zuray attempts to cross a fast-flowing river covered in merely a thin layer of ice with his sled dogs.

Joey gives Francis a shooting lesson, passing down the knowledge of how to hunt because he believes better hunters make a stronger community in Tanana.

It's the Wrights versus the Zurays in this flying target shooting competition. Watch to find out who will win the best hunting spot!

A flood is imminent in Tanana, but can everyone evacuate in time?

James must prepare for the rising flood waters - that is, until a hungry black bear threatens his dogs and he is forced to take action.

The Yukon Men are faced with a surging river threatening to flood town, business competition between two rival dog kennels, and a desperate need for firewood.

The powerful river surges near town - but will the flood preparations be enough to save Tanana from destruction?

A southern sea lion tires of chasing gentoo penguins in the surf and attempts to run one down on the beach. Both champion swimmers, these two are anything but graceful on land.

A pack of northern gray wolves harass and then attack a herd of wood bison. This is the first time wolves have been filmed hunting bison, both from the ground and from the air.

Frozen Planet represents the most extensive filming of the Antarctic interior ever attempted. Series Producer Vanessa Berlowitz explains how this was done from a twin engine airplane.

The Arctic's woolly bear caterpillar freezes solid every winter, the natural antifreeze in its body keeping it from dying. It takes 14 years before it has eaten enough to become a moth.

The Frozen Planet film crew went to incredible lengths to film penguins in Antarctica. Two went a bit stir crazy filming an Adelie penguin colony, while others braved freezing temperatures to capture emperor penguins.

A mother polar bear escorts her cubs across the ice, but the youngsters are too interested in playing, in this scene from Frozen Planet.

An Adelie penguin turns to a life of crime to build the perfect nest on Antarctica's Cape Crozier.

An older caribou bull is forced to fend off a herd of young males intent on stealing his mate. Will he stop to fight or keep up with the chase? He has to play his cards right, as the victor will be the new "boss."