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 When, subsequently, the painting is withdrawn from the restorer's studio and exposed, the art critic Drago discovers that it is not the original, but a copy.

Thanks to wartime smuggling Gioconda Perfetti, a roman fruit vendor, becomes very rich. She leaves her shop and moves to a magnificent villa which once belonged to a count. She also becomes involved with some very dubious characters who profit from her ignorance and cheat her out of her money.

Wrongly accused of his wife's death, a marine officer is forced to resign and sees his life fall apart.