This film relates the story of Russian Princess Fedora (Louise Ferida), in Czarist times, whose royal lover is assassinated on the eve of their marriage. She pledges vengeance, only to become the victim of her vow when she falls in love again.
In Florence, at the time of Lorenzo de Medici, known also as Lorenzo the Magnificent, the aristocrat brothers Chiaramantesi rule with an iron fist the streets of the city. Ruthless and fierce, the two brothers have chosen as their special victim the innocent and harmless Giannetto. Even though determined to not react to the cruel pranks of the brothers, Giannetto is forced to take a stand when Ginevra, a beautiful girl that works in the Chiaramantesi household, is dragged into the game. To defend his honor and protect the girl, Giannetto works out a fiendish plot that will end in blood and madness.
This early docudrama uses dramatic reenactment, working models of early flying machines, and archival footage to trace man's attempts to fly from ancient times through the 1930s.