This summer, Sky's much-loved duo - Rob Beckett and Romesh Ranganathan – are back to throw themselves into a new set of unknown worlds that will put their friendship to the test. They'll return to Vegas and team up with the UFC to explore the world of mixed martial arts and rev up their death growls as they tackle Heavy Metal at its UK heartland, Download Festival. They'll also take on Wildlife as they go behind the lens and test out their photography skills as part of the Natural History Museum's Wildlife Photographer of the Year, and they'll dive into Hollywood to see how they fare in the world of Hollywood Stunts.