1. Art

Karl Pilkington goes back on the road in search of the answers to more of life's big questions, beginning by heading to America to consider the point of art. He meets artists who make sculptures out of dog muck, attempts to create a masterpiece from his own vomit and strips down to his pants for a spot of performance art in Times Square.

2. Identity

Karl tries on toupées and slips into ladies' clothes as he explores the factors that shape our identity.

3. How to Live Your Life

Karl meets a group of vigilante superheroes in San Diego as he goes in search of people with unique attitudes towards life.

4. The Body

Karl discovers the alleged benefits of 'urine therapy' as he explores the lengths people go to in order to stay healthy.

6. Time

Karl investigates how we should spend out limited time on the planet as he finds out what he will be like as an old man.