Midi Première is a French variety show presented by Danièle Gilbert, directed by Jacques Pierre and broadcast from January 6, 1975 until January 1, 1982 on TF1. The program was generally broadcast between 12:15 p.m. and 12:55 p.m., then giving way to the 1:00 p.m. TV news. However, the broadcast schedule could change, depending on the guests, and the setting where the recording of the program was shot. Certain performances by artists who have become cult like the one where Ringo jostles with a demonstrator in interpretation (1977), that of Dalida with the title There is always a song with the soundtrack that does not start, twice, at the right speed (1978), Claude François and his Clodettes, who, in the provinces, are unable to join "the set" in order to interpret his song, the latter being taken by the crowd of delirious fans (summer 1977) . The group Supertramp performed there with the title "Dreamer" on March 8, 1975.

The film is a rundown of the songs sung by the stars of the time, chained to various shows such as strip and comic caricatures.

The publicist Henri Michelin is looking for a new star for the review of Eden, a music hall led by Bendix.

An old violin maker has been killed and the investigators have only one clue: on the night of the crime, a blind street musician heard a melody playing in the house. As they do not know the title of the song, they present the music to the famous radio contest known as "The mysterious melody". Little by little the two inspectors will surround the killer after checking that there are several suspects.

Around 1900, Zaza was the undisputed star of the "Variétés parisiennes". Bonded with pianist Cascard, she indulges in adventures and falls in love with handsome Bernard Dufresne. A short affair. Surprised by her friend's behavior, she believes he has a mistress in the provinces. In reality, he is married and Zaza, faced with her daughter, prefers to step aside. From now on, she'll live for her art, and will always refuse to renew her acquaintance with the man who made her suffer.

In the early 1950s, the popular radio show "La Kermesse aux Étoiles", hosted by the famous Jean Nohain, mixing lottery games and performances of various artists, will be disrupted by the adventures of a man and his fiancée seeking to recover a dangerous bottle of perfume (explosive) which was unfortunately mixed with the prizes to be won ...

Noël Rambert is overwhelmed by fate. Marthe, his wife, has left him. His son, little Jacques, sickly and touching, has psychic gifts. Life is not a happy one. A crime is committed. Poor Rambert is unjustly suspected. A good-looking man convinces him to confess his guilt. In doing so, he secures his child's future. Resigned to everything, the sad Rambert is ready for the scaffold. The little medium brings the truth to light and Mme Mortal denounces her husband, Daniel Mortal, the man behind the despicable bargain, as the murderer. Happiness returns with a bang, as the repentant Marthe Rambert continues to watch over little Jacques during the ordeal.