Bill Nighy narrates the stories of epic train journeys that cross the most beautiful mountain landscapes on the planet, from Canada's Rockies to the snowy peaks of Switzerland and the gorges of Mexico.

Deep in Alaska, the primal way lives on. Fight the freeze, brave the wild, hold on to your sanity. And winter is no wonderland when temperatures plummet far below zero. This series follows the drama and hardships experienced by Alaskan households in different corners of this merciless territory as they battle to survive, thrive, and live life on their own terms.