The Po, an unknown world, a grand adventure: the cultural history of Italy's largest river. Italy's king of rivers is one of the last blind spots on the map. Paolo Rumiz has explored it by water: with canoe, barge, sailboat, from the mountains of Piedmont to its mouth in the Adriatic Sea. The self-proclaimed Argonauts around Rumiz discover a world of unexpected freedoms. Where above, behind the dam, traffic roars, silence reigns on the water, and only the voice of the river speaks. The travelers camp on deserted shores, at night smugglers and pirates cross their path, fishermen share stories of their catches, and the meal plans reflect the diversity of nature and humanity.