Award-winning photographer, boatsman and septuagenarian John Guider embarks on a month-long adventure canoeing all 270 miles of Middle Tennessee's Duck River, one of the most ecologically diverse rivers in the world. The canoe journey was originally the means to an end, a vehicle for John's photography project to raise awareness of the threat to the Duck and its water levels. DOWN THE DUCK WITH JOHN GUIDER follows his journey and weaves together a diverse group of voices that bring context and gravity to the Duck River's significance - and so many other rivers across the country.