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Iolo Williams examines the varying wildlife that survives in some of the world's northernmost territories, including Nordic animals such as the black bear and Arctic fox. In the first episode, he explores how young offspring in Scandinavia are forced to grow up fast after the Arctic winter loosens its harsh grip.

Iolo Williams focuses on the Arctic tundra and explores how bears, wolves and musk oxen clash against each other and the elements as they fight to survive the mating season.

Iolo Williams examines how the frozen seas of winter make hunting extremely difficult for Sweden's sea eagle, and how summer and the melting ice brings hunger for polar bears. Plus, he looks at the wolverine and the lynx as they struggle to survive against the odds.

Iolo Williams examines the Nordic landscapes and how they present different challenges to the animals that live there, including lynxes, wolverines and arctic foxes that survive in remote forests. Plus, the presenter asks how various species have coped with some of the planet's most dramatic and destructive natural events. Last in the series.