Feature documentary film directed, produced and written by Werner Herzog about scientist Dr Graham Dorrington and his attempt to fly the unique man-powered airship he invented himself across the Amazon canopy of Guyana in 1992. The hope was that he would be able to locate and study the medicinal herbs growing there. However, events took a tragic turn when the aircraft encountered difficulties leading to an accident which claimed the life of Dieter Plage, Dorrington's friend and filmmaker who was documenting the expedition. Ten years later, Herzog follows Dorrington as he returns with a new prototype of the airship and visits the canopies, forests and people of the Amazon, while recounting the terrible fate of his last voyage.