There is no greater test for life than winter, as temperatures plummet to 70 below and winds reach 200kph. Darkness and ice extend across the polar regions and only a few remarkable survivors gamble on remaining. We join a female polar bear trekking into the Arctic mountains to give birth as the first blizzards arrive. Out on the frozen ocean, the entire world's population of spectacled eider ducks brave the winter in a giant ice hole kept open by ferocious currents. Arctic forests transform into a wonderland of frost and snow - the scene of a desperate and bloody battle between wolf and bison, but also where a remarkable alliance between raven and wolverine is made. Beneath the snow lies a magical world of winter survivors. Here tiny voles dodge the clutches of the great grey owl, but cannot escape the ultimate under-show predator - the least weasel. Midwinter and a male polar bear wanders alone across the dark, empty icescape. Below the snow, polar bear cubs begin life in an icy den while fantastical auroras light the night skies above. In Antarctica, we join male emperor penguins in their darkest hour, battling to protect precious eggs from fierce polar storms. Weddell seals escape to a hidden world of jewel-coloured corals and alien-looking creatures but frozen devastation follows as sinister ice stalactites reach down with deadly effect.
In what turns out to be an explosive year, witness Iceland through the eyes of the animals and people that have made this wild island home. An arctic fox family must eke out a cliff-top living, an eider farmer has his hands full playing duck dad to hundreds of new arrivals and Viking horsemen prepare to saddle up for the autumn round up. But nature's clock is ticking, and the constant volcanic threat eventually boils over with one of Iceland's biggest eruptions in more than 200 years. This land of ice and fire will not be tamed.
Some species need to be part of a group to survive--more so when they're in their infancy and taking their first, uncertain steps into the world. Join in the rough-and-tumble lives of black bear cubs, playful meerkat pups, and adorable fur seals.