This epic four-part series follows British explorer Levison Wood's expedition to walk the length of the River Nile from source to sea. His nine-month, seven million step journey takes him through jungles, savannah, deserts, cities and war zones in some of the continents's most remote and spectacular locations. A long the way, he encounters modern Africa, its people and its wild life face-to-face. The Nile remains one of the last holy grails in exploration - no one has ever completed its entire length on foot. Levison's goal is to reach the Mediterranean Sea - wherever lies in his way and wherever the Nile takes him for 4200 miles. The river pushes him to the edge of his mental and physical limits as he is forced to live off his wits and bushcraft skills.