In the 1850's two British officers, Capt. Richard Burton (Patrick Bergin) and Lt. John Speke (Iain Glen) set out on a spectacular adventure to discover the source of the Nile. They are warned that great dangers await them, but against all odds they push on deeper and deeper into the magnificent, untamed African wilderness, where no western man had ever gone. As the difficult journey take its toll, Burton and Speke forge a strong bond. A bond that one will eventually betray. But history will be the judge as the two intrepid explorers venture into realms.