The American Indians called the huge expanses in northwest America "Alyeska", or "great land". Whilst in the dark months of the polar night these wastelands are frozen places and anything but hospitable, in summer, in the soft tepid light of the midnight sun, the tundra feeds thousands and thousands of living organisms. Between these contrasts there is a variation in temperature of up to 100ºC. To be able to support such extreme climatic conditions and, at the same time, fully exploit the rich resources of the tundra, it is necessary to have a great ability to adapt and especially move. Nearly all the big animals of the arctic zones face long exhausting migrations every year. The author and cameraman of the documentary, Andreas Kieling, decided to film and illustrate the strategies of survival of these big arctic nomads, becoming a nomad himself to accompany the interpreters of the documentary in a journey through magnificent landscapes.