Un diplomático francés que trabaja en la sede de la ONU en Nueva York desaparece inexplicablemente. Con el fin de hallar alguna pista sobre su paradero o sobre las misteriosas razones que pudieron obligarlo a abandonar la ciudad, los periodistas franceses Moreau y Delmas se trasladan a Nueva York.
The action takes place on the coast of the eastern Pyrenees near the Spanish border. Mario Balducci escaped from prison, after settling his account with his former accomplice who had given him away, he joins his ex-mistress, Mado, a bellowing singer whom he asks her to help him get to Spain.
An American manager and his daughter want to hire "the little singers with the wooden cross" for a tour of the United States,but Jeannot,a young member of the choir recognize his grandma's locket round the girl's neck .
