Plot: Bear Grylls pushes Stephen Fry to his limits with a series of incredible challenges on a once-in-a-lifetime expedition to one of the most spectacular mountain ranges in Europe. Over the course of two days, high in the Italian Dolomites, Stephen travels on the skids of a helicopter, climbs down a raging 500-foot waterfall, sleeps in a First World War trench and abseils down a towering cliff face