No wonder Germaine, Madame Dubard's new maid, has funny manners: it's just her day job. At night, she's working the streets of Pigalle. When Mrs Dubard's nephew visits his aunt, he thinks he has already seen this lovable blonde somewhere.

In this riot of frantic disguises and mistaken identities, Victor Pivert, a blustering, bigoted French factory owner, finds himself taken hostage by Slimane, an Arab rebel leader. The two dress up as rabbis as they try to elude not only assasins from Slimane's country, but also the police, who think Pivert is a murderer. Pivert ends up posing as Rabbi Jacob, a beloved figure who's returned to France for his first visit after 30 years in the United States. Adding to the confusion are Pivert's dentist-wife, who thinks her husband is leaving her for another woman, their daughter, who's about to get married, and a Parisian neighborhood filled with people eager to celebrate the return of Rabbi Jacob.

Codeine has been stolen from Philippe Calaro's pharmaceutical laboratory. The police are investigating and ask the young chemical engineer to remain at their disposal, as one of his direct employees is under suspicion. On his way home from an evening out with a friend, whom the case has forced him not to accompany on a trip, he discovers the corpse of an unknown man in the boot of his car. Distraught, and without thinking about his imprudence, he disposes of the cumbersome and inert passenger in the woods of St-Cloud. After the departure of his girlfriend's plane to Orly, he is accosted by a young girl who tells him she knows the dead man from the previous evening, and begs him to join her on the Air France bus, to disguise the fact that he is being followed.

A young botanist, an Englishwoman and her daughter are prisoners of a group of bandits operating in the mountains of Albania. A ransom is demanded. The capture of the gang leader's daughter, however, brings the situation to a happy conclusion.

The Marquis Rodolphe de Sombrueil accidentally runs over a working man with his carriage and helps his widow -- unjustly accused of robbery -- to find her missing daughter.