1952 French film by Léo Joannon

1951 film by Henri Lepage

Professor Branck invented Fortuna a machine providing absolute luck, fortune and success, to whoever uses it, provided they are a virgin. Trying the experiment, Lucien Lepur, a street vendor who has never known a woman before, becomes the man of all successes. But he soon regrets Micheline his fiancée and finds himself under the influence of Professor Branck. Helped by Casimir, Micheline snatches Lucien from Professor Branck. Falling into her arms, Lucien loses all his powers but wins love.

1954 film by Émile Couzinet

Michel Levasseur is a joyous reveler who does not care about the next day. So much so that one day a bailiff bursts into his Paris apartment and seizes his furniture on behalf of Raymond Sauvaget, his landlord, a rich food industrialist. But far from resenting Sauvaget's act of hostility, Michel ... becomes his friend. Now Raymond, although prosperous, does not know how to handle women. That is why he asks Michel, a regular Casanova, to give him lessons in seduction.

1951 film by Sacha Guitry

During WW1, a train is stopped by a bombing, a young soldier takes advantage of the opportunity to go to his native village to connect with his love and his family. As WW2 began in the real world, this film was rereleased later in ‘39 under the revised title Je t'attendrai (I Will Wait for You).

Madame Rose runs a seedy hotel in a suburb of Paris. Strong-minded but without the least moral scruple, she once killed her husband whose honesty was a hindrance to her business. Under a suspended sentence, she now indulges in smuggling. One day, Victor, one of her former accomplices hounded by the police, finds sanctuary with her. During a drinking spree, he has the bad idea to entrust to her a suitcase filled with bank notes, a loot with which Victor hopes to rebuild his life in South America. But Rose, lured by temptation, betrays Victor, who is arrested by the police. However, he manages to escape with only one thing in mind, to take revenge on Rose...

A woman's marriage is on the rocks ; to avenge herself, she decides to take a lover for one night .So she buys all his stock from a balloon man and flies them through the Parisian sky ; all her balloons carry a message :"I will be alone after midnight" (hence the title); a lot a suitors comme to the rendezvous : a fisherman, a soldier, a traveler , a gentleman cambrioleur (a nod to Arsène Lupin?) and others ,much to Michel, a young man in love with her's displeasure.