It's day four in the woods for the Outsiders, as they continue to battle it out to see who will form the best post-apocalyptic society. David Mitchell challenges the six comedians to put their knot skills to the test as they tie each other up, create masterpieces out of discarded rubbish, and spy on him as they take part in the Surveillance badge. Will Jess and Joe's pre-challenge nap pay off? Will Darren and Maisie's busty new friend seduce David?