The battle with isolation takes a mental toll on Louie. Alan on the other hand, is loving his “autistic paradise,” but soon faces an unexpected problem. Former Army Commando Pip discovers the wilderness is giving her a new perspective on life. Meanwhile, ultra-marathon runner Javed hasn’t caught any food since the competition began but is hoping a strong mindset can carry him through. A wild storm that upends trees puts everyone in danger, but for Naomi the terror doesn’t stop there as she is targeted by a predator after dark. And the scale of the challenge proves too much for one more person.