The stories of Baron Münchhausen were enriched by Karel Zeman with a character of a modern astronaut Tommy and compare two different worlds - the world of a rococo cavalier whose fantasy does not have any limits and the world of a young man of the present time. The astronaut (Rudolf Jelínek) finds on the moon the famous dreamer Baron Münchhausen (Milos Kopecký), who takes him back to earth and a variety of exaggerated adventures. Amusing variation on the old stories, using live action against deliberately artificial backgrounds.