Fourth and final film in the collection about incredible physical endeavour and mental challenge that seeks to capture the spirit of adventure and a love of the great outdoors. This new series gets right among the planet's most incredible adventurers in awe-inspiring landscapes, witnessing first-hand extreme physical and mental challenges. From human catapulting in the Norwegian fjords to acrobatics on cliff edges in America; from squeezing through crevices to break world records to walking high wires across the world's greatest waterfalls, these amazing people stop at nothing to reach their goal. The programme also features inspirational stories from adventurers who've faced adversity but whose indomitable spirit has seen them get back to living life on the edge.