The epic story of what happens when nine celebrities attempt the ultimate endurance challenge for Comic Relief - a gruelling 100km trek across a desert in Northern Kenya. Fighting exhaustion, blisters, scorpions, stomach bugs and temperatures pushing 50 degrees Celsius, it is an adventure they will never forget. With Dermot O'Leary, Lorraine Kelly, Kara Tointon, Ronni Ancona, Craig David, Olly Murs, Nadia Sawalha, Scott Mills and Peter White. Show less