In April 2008 ex-soldier and explorer Ed Stafford and his friend Luke Collyer decided to take on a monumental challenge: to trace on foot the whole length of the Amazon, from its source in Southern Peru to its mouth on the Brazilian coast. / They believed it would take them one year and would involve walking 4,000 miles. In the end, two and a half years and 6,000 miles later, only Ed of the original two, would make it to journey's end on the Atlantic. / Along the way he had climbed an 18,000 feet mountain, filmed never-before-seen tribal ceremonies, eaten cactus, tortoises and tapirs, been mistaken for a white man buying human organs, and met a remarkable local guide named Cho, who, after Luke's departure, accompanied Ed on his mammoth trek. / As well as filming all his own footage and demonstrating the skills needed for survival, this is a vivid portrait of a man driven to the edge of his own sanity, to join the ranks of the greatest explorers of all time. (Source: discovery channel website)