Plot

When he got out of prison, Jo (Maurice Biraud

Maurice Biraud

Maurice Biraud was a French film actor. He appeared in 90 films between 1951 and 1982.-Selected filmography:* Le Secret d'Hélène Marimon * Poisson d'avril...

) finds out that his love Rocky (Mireille Darc

Mireille Darc

Mireille Darc is a French model and actress. She was Alain Delon's longtime co-star and companion. She appeared as a lead character in Jean-Luc Godard's 1967 film Week End...

) was cheating on him with Jockey Jack (Louis de Funes

Louis de Funès

Louis Germain David de Funès de Galarza was a very popular French actor who is one of the giants of French comedy alongside André Bourvil and Fernandel...

) to get his revenge he sends his man "pom chips" to kill Jockey. But accidentally "Jockey" kills "pom chips". He now has to hide the dead man, so he hides him in a big violin case belonging to his cousin Jerome (Michel Serrault

Michel Serrault

Michel Serrault was a celebrated French actor who appeared in over 150 films.-Biography :...

). But inside the vest of the dead man are 3 future winning horse race numbers. the dead man is taken everywhere inside the violin case and in a comedic way every time someone was about to open it a miracle comes by and it stays closed, until an old drunk lady discovers and spreads the news. The body inside the case is taken by "Jockey" and his cousin "Jerome" to Jerome's house where he lives with his aunt and uncle (Francis Blanche) who happens to work in the coffin

Coffin

A coffin is a funerary box used in the display and containment of dead people – either for burial or cremation.Contemporary North American English makes a distinction between "coffin", which is generally understood to denote a funerary box having six sides in plan view, and "casket", which...

 business and uses the same type of violin cases to transport dead people. The body of "Pom Chips" is presumably buried by the uncle who takes his jacket. Later on, "Jo", who fell back in love with his mistress "Rocky", watches the race on television and the numbers whom the dead "Pom Chips" had in his vest finished in the first 3 positions with a reward of about 1800000 francs. then starts the race after "Pom Chips" jacket, "Jo" sends "Rocky" to know what might have happened to it from "Jerome", She kisses him many times and tries to seduce him. Later on, "Jo" knew that the uncle holds the jacket takes the supposed winning numbers from the jacket and hurries to submit. The worker looks at the numbers and laughs, they're the wrong ones. "Jo" leaves disappointed. Seconds later "Jerome" enters and submits the card he holds with the 3 winning numbers, and goes with the prize. "Jo" tries his luck many more times in the horse race and is caught by the police for bankruptcy. He sadly says goodbye to "Rocky", and when the police takes him away, she starts running and laughing and goes to hug "Jerome" and they go together in a "new" convertible car while still laughing.