Charles Lepicard, Lucas Malvoisin y Éric Masson pretenden falsificar billetes. Éric cree tener bajo manga a un grabador sin igual, el de un tal Mandarès (ahora preso), Robert Mideau, le "Cave", es decir, en el argot de los truhanes, un ser ordinario, crédulo e ignorante. Pero el fraude no se puede hacer sin Ferdinand Maréchal alias "Le Dabe", antiguo falsificador de élite. Retirado en Venezuela tras un golpe frustrado, recibe la visita de Charles que le propone un último negocio con los florines, la misma moneda del golpe frustrado. Le Dabe acepta y viaja a París. El equipo se pone a trabajar.
Emile is a steelworker in a car factory ;a confirmed bachelor going on fifty, he leads a peaceful life .One night, he is woken up by a burst of machine gun fire. The cafe in the corner of the street has been burglarized.A distraught young girl rushes into his apartment building and hides in his room .When the police make a search, he makes her out to be his lover for the night.Madeleine tells her about her sad past : she has severed all links with her parents ,she's an unwed mother and in the underworld's clutches. Emile sends his protegee to old mommy Dupont's place ,in the suburbs of Paris.
André, un abogado casado, deberá defender el caso de Yvette, una bella muchacha acusada de hurto. Durante la preparación de su defensa, él se sentirá atraído por ella hasta el punto que no verá que ella no está siendo sincera con él.
Catherine, 18, loved Jean, a young accountant, who loved her in return. And yet, one morning, two policemen find their dead bodies on a stretch of waste ground. The case is obvious: the two young people have killed themselves. But why? Chief Inspector Ernest Plonche, feeling upset, decides to investigate personally.
