The Sicilian Clan
Roger Santet is just a murderer emerged from prison by the Sicilian clan led by the Vittorio Manalese that is aging. They conspire to steal a cache of stones from an exhibit in Rome. Since they are currently getting ready for the heist, the mobster friend Tony Nicosia suggests that a way to find the stones would be to ditch the transport plane while it's en route to New York. The inspector Le Goff is using all the available resources to thwart their plans. Santet finds himself trapped with the daughter-in-law of Manalese though the heist is so effective