Surprised by the fog, the ship Fraternité suffered significant damage. Therefore, an investigation must be carried out in order to determine the conditions under which the incident occurred. It falls to deputy Puy-Pradal who has just been appointed high commissioner of the navy: the latter, after his meeting with an actor, gradually forgets the mission entrusted to him.

Womanizer Don Mateo helps a girl in a train when attacked by a other woman. This girl, Conchita - a cigarette maker, soon visits the rich Don Mateo at his palace in Sevillia. He falls for her, but she likes to play with him. Sometimes she encourages his advances, then she rejects him. Furthermore, there's a portrait of a young man in her room. When he offers her money her mother urges her to accept, she runs away. Some months later he discovers her dancing flamenco in a sleazy cabaret. She notices him, flirts with other customers, then with the young man from the portrait, before she starts talking again with Don Mateo. But the manager asks her to prepare for the next number. Don Mateo soon realises, that that next number is not on the stage, but in a different room. There she dances in the nude (shown!) for rich tourists. He interrupts her dance and asks her to quit. She half accepts and starts dancing in a different place. A rendez-vous with Mateo is again used to make him mad with ...