Susana is an unappreciated, naive and somewhat clumsy orphan who has lived since she was a child at doña Engracia's house, because her mother died a few days after she was born. In this house, which also houses three nephews of doña Engracia without a penny to one's name, Susana is the maid of all. Economic necessities lead Engracia to rent a room. Felipe, a handsome man with a bad reputation, will reply to the ad.
Antonio, the famous dancer is preparing a big performance for the TV. But he is missing a good female dancer. One day he sees a girl dancing in the streets but when he is going to talk to her she runs away. She lost one of her shoes and this will be the only hint Antonio will have to find her. She is the new Cinderella.
A mature man habitually pursues young girls, for which he is abandoned by his wife. The devil intervenes, offering both spouses, separately, to regain their youth. The two agree to make up for the lost years, but the devil makes them both join the same gang for a summer. The husband, who now feels comfortable, falls in love with his wife again without recognizing her, just as she will not recognize her ex.
The arrival of Francis, who owns a factory of surgical material in New York, caused a real stir in a family composed by her grandfather, Pepe, the son, Jose, and grandson, Pepito. Pepito falls in love with her even though Francis consider him a child. But Don Jose is also in love with the American. This situation creates a difficult situation between parent and child, that Francis seeks to remedy returning to the United States. But the grandfather, Pepe, has the solution ...
Several independent histories in the St Valentine's Day, which they have jointly that a celestial emissary collaborates in solving his conflicts.
Cristina is the perfect secretary. She helps her boss to get an important contract with an holand businessman. He goes to Madrid to get married with a spanish girl similar to Cristina, but she hesitates between the foreign and Lorenzo, her co-worker.
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.
Fearing that her niece Rosita will abandon her true love and enter into a marriage of convenience, doña Juanita tells her the story of when, many years ago, she fell in love with an accountant who worked in a circus.
In Madrid, Spain, at the end of the 19th century, the young and reckless Basilio seems to be the only person who perceives the spectral presence of Professor Robinsón de Mantua, who begs him to take care of his niece Inés, because she is in grave danger.