Bruce travels 6,000km by foot, light aircraft and boat. On the way he meets the people who live and work along the planet's greatest river, from members of some of the world's most remote tribes to illegal miners stripping the Amazon rainforest for traces of gold. It's a complex, shifting and fascinating part of the world - home to millions of people; the front line in an environmental war; the lungs of our planet. In his own uniquely immersive way, Bruce unearths the stories of those whose lives are intricately linked to this most biodiverse habitat. The truths Bruce discovers are often terrifying and always eye-opening, reminding us that the Amazon's fate will affect us all.