Jon Richardson, one of Britain's most cautious men, is sent on a mission by his wife Lucy Beaumont, to investigate the things they are most scared about.
Best friends Joel Dommett and Nish Kumar travel to locations across the globe to immerse themselves in the lives of the toughest, strongest, fittest people in the world.
Actors Will Mellor and Ralf Little - friends for over 20 years - are on a laughter-packed mission to discover what aspects of modern life they're getting right but are more often getting wrong.
