Ed Stafford challenges endurance athlete Matt Graham to a rematch in the cold and brutal highlands of Scotland

A former US Marine intelligence officer and primitive skills expert, Donny Dust, joins Ed Stafford in a race across the wild and unforgiving Amazon jungle.

Ed Stafford will risk his life in scorching hot north Kenya in the volcanic barrier to compete against Max Djenohan, a young, elite survivalist who's out to prove he has what it takes to match the best.

Ed Stafford tests his body's ultimate limits as he races against medic and ultra-marathon runner Sun Lingye across the mountains of Taiwan.

For the first time, Ed Stafford will compete against two challengers, Amber and Serena Shine, in Kenya's Rift Valley, where they will encounter lions, African elephants, hippos, crocodiles and bull elephants blocking their paths.

Ed Stafford goes up against his son's godmother, Ness Knight, a renowned explorer and survival specialist, across the deadly Valley of the Gods.

This special behind the scenes episode reveals how Ed Stafford's quest for constant improvement is a lifelong endeavor, aiming to redeem himself and come to terms with the man he's become through the course of the great adventure that is First Man Out.