A famous painting by Antonello da Messina, "the man with a gray glove", has been entrusted to an old restorer. When, subsequently, the painting is withdrawn from the restorer's studio and exposed, the art critic Drago discovers that it is not the original, but a copy.
In the Caucasus a rebel fighter battles against the rule of an oppressive Russian Governor, although he is in real life a prince who pretends to be a supporter of the Governor.
After an astrologer has foretold him he will die at an early age if he does not avoid a romantic entanglement, Alessandro Stradella, a well-known composer decides to leave Rome for the North of Italy. Written by Guy Bellinger