Jerry Drake, a former American military pilot who earned himself the nickname of Mister No during the Second World War on account of his rebellious nature, decides to abandon his own country, the ideals of which he no longer shares, and to go to ground in Brazil, amid the shanty-town hovels of Manaus, a city that retains only a few buildings testifying to its ancient splendor. A drifter in our "civilized" world, in Amazonia Mister No finds a lifestyle that suits him, and happily "changes his spots" by becoming a sort of "tourist operator" who hires out his dilapidated old plane, a Piper, as well as his own skills as a pilot, to tourists or anyone else who might need him. Our hero lives from day to day, trying to keep out of trouble (but the latter regularly ferrets him out), running after some skirt or other or spending his evenings over a good few glasses of cachaça with his friends, one of the most important of these being the German Kruger, known as EsseEsse. While Jerry Drake's adventures maintain a rigidly realistic structure, they have ranged over virtually all the genres of popular fiction, from pure action to detective stories, touching on science fiction and high comedy, at times dragging the character out of his "natural" environment and propelling him as far as Italy, Africa and the United States. But there is also no lack of episodes about the character's past, from his youth in the Thirties up to the war, and then also during his subsequent years as a drifter wandering all over the world, up to his definitive stopping point in Manaus, in the nineteen-fifties). The character Mister No is the work of Guido Nolitta, alias Sergio Bonelli, to whom this series offered an opportunity to convey his immense love for an environment that is perhaps the last remaining place where one can plausibly have a real present-day adventure. In this respect, Nolitta was vastly ahead of his time, prefiguring some of the ecological themes that are widely felt today. Provided with initial sketches by Bonelli's various co-workers, the character was then defined by the elegant hand of Roberto Diso, whose lively and attractive illustrations succeeded magnificently in depicting the natural scenery that forms the back-cloth to this unconventional pilot's adventures.