In Morocco, Mitchell and Jhoanna embark on a trek through higher elevations only to have tempers flare. In Norway, Justin and Jenny try to outrun an Arctic storm. And in Mexico, Max and Linn's gamble to build a raft to float to civilization backfires.

In the final days of their challenge, survivalist couples struggle to reach civilization. Jhoanna and Mitchell go their separate ways. Justin and Jenny get flooded out of their final camp. And the medics must evaluate Max's declining health.

Through new interviews and never-before seen footage our couples look back and reveal new insights about their three-week survival challenges in three of the most difficult locations in the world.