It's the Outsiders' first day in the wild. A sceptical David Mitchell oversees the chaos as the teams are set survival challenges and compete for badges.
David is equipped with a hosepipe as he tests out whether the shelters he's asked the comedians to build are waterproof or not, and he also challenges them to design a camp gadget.
Tempers flare as the comedians take pot shots at one another in a hunting challenge. But they come together to convert David Mitchell to their whacky new religion.
It's the Outsiders' last day living together in the wild - there's all to play for as the teams go all out to impress a sceptical David Mitchell and prove they can survive post-apocalypse.