Christine and Grace face their biggest test to date as they head to a remote cabin in the wilderness. Ben wrestles to recover after a fire ruins his permaculture business, and Wiggo scares tourists with grizzly tales of death and danger.

Christine and her lead dog prepare for Svalbard's biggest dog sled race, Wiggo struggles to quit smoking, and Doctor Echhardt explains how his small team has dealt with frostbite, polar bear attacks, and emergency rescues.