The journalist, broadcaster and documentary filmmaker Louis Theroux sits down with some of Britain's biggest stars and popular figures. He also steps into their lives outside the interview room and spends time with them as they work. Along the way, he accompanies Dame Judi Dench to the Gielgud Theatre, travels to an adventure festival with Bear Grylls, joins Rita Ora on the set of her latest music video, and watches Katherine Ryan perform stand-up. In the process, he learns more about these figures and what makes them who they are.