A diamond smuggling operation goes wrong when an ordinary Soviet citizen becomes unwittingly involved, and the criminals are forced to court him to retrieve their diamonds.
The Diamond Arm is a Soviet crime comedy film made by Mosfilm and first released in 1969. The film was directed by director Leonid Gaidai and starred several famous Soviet actors, including Yuri Nikulin, Andrei Mironov, Anatoli Papanov, Nonna Mordyukova and Svetlana Svetlichnaya. The Diamond Arm has become a Russian cult film and is considered by many Russian contemporaries to be one of the finest comedies of all time. It was also one of the all-time leaders at the Soviet box office with over 76,700,000 theatre admissions in the Soviet era. The plot of the film was based on a real-life news item about Swiss smugglers who tried to transport jewels in an orthopedic cast.