Dropped into harsh conditions with limited resources, the brothers encounter new challenges that wreck havoc on their bodies and minds. Conflicts arise. Tension runs high. But Chris and Casey must adapt if they want any chance at returning to civilization. After testing each other, their will, and Mother Nature year after year, will this be the time that the Keefer brothers face obstacles that they cannot overcome?

Professor Robert Winston presents a series investigating the natural instincts inherent in people, covering survival, procreation, the drive to succeed and the heroic impulse.

Witness the epic nature of Wild Scandinavia: orca, puffins and eagles rule the fjords; wolves and lynx patrol magical forests; polar bears and musk ox survive arctic extremes. Basejumpers and reindeer herders also embrace the wilderness.