Near the end of the 19th century, Prof. John Mayer and his assistant, the scientist Dr. Isabel Reed, accidentally invent a powerful ray. An alien travels to Earth to destroy the machine since it would be a threat to the universe. He initially possesses the mind of Thomas, a sex maniac and serial killer, to get close to Mayer during the demonstration of the machine to scientists and the military. Mayer's niece, Laura, meets an acquaintance of her uncle, the chemist Dr. Paul Rosten, and Mayer invites him to join the research. When Thomas gets close to Mayer, the alien also possesses his mind in order to destroy the device and his notes. Meanwhile, Thomas is not able to control his murderous impulses and attacks several women with a straight razor.

An executive who depends on his wife's fortune has a great weakness for women. One day, his chauffeur discovers the flat where he has his mistress, a painter who has him totally idealized as reflected in her paintings. But this straight man ends up, by circumstances of life, paired with a homosexual.

Maria is a young orphan who lives with her wealthy aunt. Maria sings in a cocktail bar with his friends, who form a rock band, and enjoy the night with them. One of his friends, Ernesto, is in love with her, though she does not seem to feel the same about him. In fact, multiple existential doubts and feel a strange emptiness in his life suddenly drive to enter a convent as a novice, breaking Ernestos' heart. However, with her cheerlul character, open and rebellious, not appear to conform to life in the cloister, and especially have problems with the novices director , who often punished for trying to take the right path. In the convent, which also functions as children's hospital, she meets a doctor with which it takes quite right for the contrast between his two characters, but his way with love and mutual respect.

The famous artist finds his identical twin in a tour of Argentina with many situations of entanglement, but in the end overcome the twin love.

Young doctor Jaime attends his father's clinic where Diana, a singer, is carried by emergency. After operating it, Jaime falls in love Diana and decides to accompany her throw artistic caravan, where replaced a singer and quarrels by jealousy with Javier, a womanizer trying to conquer Diana.

Eduvigis is an Eldery Lady who lives in Madrid, and visits bad luck on everyone that she looks at through glasses that her late husband gave her, which were made from crystals from an Egyptian Tomb. To arrange the sale of an inherited house, she must travel to the Canary Islands, and so puts an advert in a newspaper asking for a maid to accompany her, and a chauffeur to drive her car. Mercedes, a girl who works in a Museum in Madrid, and Tony, a student whose college has just started Summer vacation, answer the advert. Neither of them gets along with the other at all, but both are hired to make the trip with Eduvigis. Arriving in Tenerife, Mercedes and Tony discover that the house is worth much more than it appears, and much more than what is being offered.

Young woman looking for a rich husband, sets her sights on a very pious and old-fashioned neighbor.

Beautiful women argue with various men about those things about love.

Rosita and Carlos, two young people who deeply detest each other, despite their parents determination to marry them off to unite their fortunes. Noticing their constant rivalry, the parents feign animosity to try and force the couple to fall in love.