Captain Benoît manages to take possession of the plans of a new German airplane. The German counter-espionage assigns one of their agents, beautiful Erna Fiedler, to seduce Benoît and to eliminate him. But the two spies fall in love.

There are collectors and collectors. As far as he is concerned, Monsieur Coquelet has brought together a collection of historical... garters! So imagine his reaction when he realizes his most invaluable piece has been stolen... Municipal police and gendarmerie are alerted. The culprit is caught at long last but he is not... among the usual suspects!

Having fallen out with his girlfriend Dolorès, Juanito leaves for Mexico, where he becomes a famous matador.There he meets a Viennese singer, Fanny Miller, who falls for him so much so that she intercepts the letters Dolorès keeps on sending him. In desperation, Dolorès devotes all her time and efforts to dance and she becomes the celebrated dancer Estrellita. After a series of misunderstandings and ups and downs, the sun of Andalusia will finally reunite the two lovebirds.

Juanillo is in love with Dolores, the daughter of the owner of an inn. He likes to sing, she likes dancing. After the village festivals, where Juanillo has acted as a bullfighter and Dolores has performed, he has been hired as bullfighter for a tour in America. They exchange vows, but their letters will be intercepted.