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.

In Vendée, an old farmer is gradually abandoned by his family who do not see their future in the fields. Only a cripple in love and abandoned remain at his side.

Bernard, Sleeper Coach conductor and automobile inventor, is confused to be the racing car company president, and falls in love with a countess, who is actually a slogan prize winner chorine.

A young man is kidnapped by his business competitors, but the jailer falls in love with the man she has to keep a prisoner. A lost film.

After a year of turbulent marriage Annette and Daniel get a divorce, and each marries again. However, they meet again on the French Riviera and are tempted to give in to their old passion...

To receive his fiancée and his father at his home, an Oxford student counts on the presence of his aunt from Brazil to serve as his chaperone. The latter having delayed his trip, the young man passes his servant off as his aunt. This results in multiple misunderstandings. Finally, everything works out when the aunt comes.

Démonio the fakir has impressed a rich but weak-willed young man who hires him as an energy teacher. Demonio drags out the businesses of the shy lover, but his partner arranges everything and the finally satisfied lover endows the two accomplices who renounce fakirism.

In a school for chansonniers, each student goes to the board where he says and mimes his sketch.

Count Dimitri is sentenced to death for hitting Prince Paul who was trying to steal a kiss from Countess Vera. Prince Paul pardons him because of a young girl who knew how to conquer his heart at the right time.

Under two different names, a journalist writes for two newspapers with opposing political doctrines and finds himself forced to fight a duel with himself.

A great singer eager to know the love of a sincere woman, in love with him and not with his glory, disguises himself as a worker. He meets the girl of his dreams. A commitment takes her away, she tries to kill herself but he comes back in time and they can love each other without constraint.

The widow of a soldier in the 1914-1918 war, running an inn called "Au rendez-vous des veterans", is happy to see her daughter in love with an officer whose father was once in love with La Madelon.

When the war is over, a captain finds it very difficult to reintegrate into civilian life. Nothing happens, neither in journalism nor in insurance.

A widow named Blanche Montel endeavours to find a man with whom to produce a child so that she can pretend that the child was her late husband's and so inherit a fortune.

Escaping from a policeman who has caught h.im with a stolen dog, Toto (Albert Préjean), a petty crook, hides in the apartment of a typist, Ginette (Renée Saint-Cyr). The two quickly fall in love, and after a brief incarceration, Toto returns to her and schemes to have her win a beauty contest.

The virtuous Nicole is the wife of wealthy composer Lucien. Through an error made by a dressmaker, Nicole discovers that Lucien is leading a double life, keeping the sexy Chichette as his mistress. In retaliation, Nicole kicks up her heels and begins fooling around with a reckless gigolo. When our heroine's hedonistic new lifestyle threatens the well-being of her son, a contrite Lucien returns home and promises never to stray again.