The Résistance want René to set up a mobile radio station. The necessary equipment is dropped by a British plane. Unfortunately, it drops down one of the chimneys of the chateau. Réne and his staff take the place of a flamenco dance group booked to ... (more)perform at the chateau, so that they can retrieve the radio equipment. Lieutenant Gruber had arranged to deliver a photograph of the painting of the 'Fallen Madonna' to a Spanish art expert who is posing as a member of the real flamenco dance group. Gruber gives the photograph to Monsieur Alphonse, thinking that he's the art expert.