Using Leonardo Da Vinci's innovative designs for weapons of war, flying engines and other machinery, three brothers join forces to fight a wicked and powerful Duke in early-Renaissance Italy.
John Drew Barrymore
Lotario Duchesca
Scilla Gabel
Isabella - duchessina di Collinalto
Giacomo Rossi Stuart
Vannozzo Duchesca
Mario Pisu
Eusebio Pimperval
Jany Clair
Visconte di Lagouer
Romano Ghini
Demetrio Duchesca
Franco Balducci
Maraldo - capitano del duca
Giampiero Calasso
Servo muto di Eusebio
