Symphony of Silence tells the story of Josue, a member of the Cofan tribe in the Amazon rainforest, who has come to Washington State to learn how to capture the sounds of the natural world from pioneering acoustic ecologist Gordon Hempton. Gordon is losing his hearing and wants to pass what he has learned to the next generation while he still can. The pair come from vastly different worlds, but share the simple belief that recording the natural sounds of the planet has the potential to help save it. As Gordon recognizes the limits of his own ability to continue his work, we see Josue stepping into the role as someone who understands the stakes better than anyone, as he watches his community fight to conserve their homeland and as he discovers his place in that fight.