Alaska, a landscape formed by gigantic ice caps and glaciers, intersected by turbulent rivers and enormous lakes. In the northernmost point, the Arctic Circle, it is bitterly cold in winter. In summer, heat waves occur again on the plains. It's hard to survive here. It is not without reason that Alaska has fewer inhabitants than Siberia. And yet there is a wealth of wild nature to discover here. This breathtaking series shows how the unique animals that live here continuously adapt to the extreme seasonal changes and hostile landscape.