Bruce Parry (Tribe) returns for his most ambitious series yet as he journeys from the source of the mighty Amazon river to its mouth in Amazon. His epic journey takes him along the world's greatest river, starting high up on the Peruvian mountain Nevado Mismi. He travels through the world's largest forest - the most bio-diverse habitat on the planet, and home to some of the last uncontacted tribes left on Earth - and finally to the port of Belem, where the tiny trickle that started as glacial melt water finally meets the Atlantic Ocean. Bruce begins in typical style, spending some time living with a family of llama farmers. But he's soon on the trail of something more sinister as he meets some of the key players in the cocaine trade, and the narcotics police determined to stamp them out.