In Morocco, Mitchell and Jhoanna endure a massive hailstorm before hunting for their biggest food victory yet. Justin and Jenny finally emerge from a three-day storm in Norway. And in Mexico, Max and Linn experience a huge bounty - and a betrayal.

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.