While celebrating his birthday, police inspector Basquier recalls two of his most celebrated cases. The first involves duplicitous moneylender Olga. The second concerns the brutal broad daylight murder of innocent young Yvonne.

RY A revolution breaks out in a South American country while its cruel dictator is on a trip to France. The rebels have made careful plans to blow up the dictator's private plane as he returns, but at the last second he changes plans and travels on a commercial flight. The rebels then must make a difficult decision: they must either blow up a flight filled with innocent passengers, or else allow the dictator to return home and take brutal reprisals against the leaders of the uprising.

Michèle, an employee at the airport, is in love with American pilot Eddie Miller who regularly flies the route from New York to Paris, but problems arise when he is transferred to the Tokyo route. Meanwhile Michèle's uncle Albert who works in the freight department sets out to tackle a drug trafficking outfit.

The daughter of a notorious smuggler is raised as a boy by her foster mother.

Judge Julien Lamy regularly deals with the welfare of children, namely down on their luck delinquents. When an orphan named Alain Robert burns down a barn belonging to his abusive foster family, Judge Lamy has no choice but to send him to a juvenile jail. There he meets an older boy named Francis Lanoux, who is desperate to escape and be reunited with his girlfriend Sylvette. The boys eventually flee the institution, as Francis goes in search of his lost love and Alain continues looking for his parents. Unfortunately, the little rebels run into some big problems once on the outside.

Robert and his fiancée Lucienne were due to go on vacation together to a tented village in Sicily. Robert is forced to postpone his trip and only joins Lucienne a few days later, taking advantage of the departure of a following group. During the train journey, he befriends Thérèse, a young Sicilian living in Paris, who wants to make a pilgrimage to the land of her ancestors. Lucienne is away from the camp when Robert arrives, so he can continue to see Thérèse, and little by little they discover that they love each other. When Lucienne returns, an explanation and reconciliation take place, then Robert changes his mind and, with the vacations over, leaves Lucienne alone to live in Sicily with Thérèse, who wants to stay in her family's homeland.