Muscleman fights sea monsters and Amazon warriors, then returns home to find a race of giants living in a valley, into which fellow countrymen are being thrown as punishment for opposing a usurper king and his consort.

A mad scientist creates a hideous monster to carry out his murderous plans...

Rosana is an attractive teacher who is losing his youth with such discipline in the study. When suddenly bursts into his life a perfect cheeky who lives of game and odd jobs as photographer, but wants to acquire a little culture for personal reasons. So he hires the services of the best teacher of the place ...

Elisa, a seller of a fashion house, sends a model to the wrong address. For fear of being fired she decides to recover it on her own. She encounters Alberto, a guy whose wedding is at noon, going to the same place it. From the moment they meet, they begin to suffer all kinds of mishaps.

Blanca and Ramiro are a married couple who are always arguing just for pleasure; but Blanca suddenly suffers a misfortune and everything changes.

In a sector of Madrid inhabited by families of a well-off class, a gang of boys and girls has continuous fun, sleep and drink, while their parents ignore practically everything. However, each of these young people has, to a greater or lesser degree, a problem. The parties and parties enjoyed by a group of young people from the upper class are the basis of the story that explains this film. Among them we find the famous couple, once happy, formed by Carlos Larrañaga and María Luisa Merlo. Directed by Fernando Palacios, and with a script by Rafael J. Salvia and Pedro Masó, " It's always Sunday " has no greater intention than entertainment, despite giving history a certain sociological touch, for that of valuing the behavior of the Youth of the time.

The script is based on the novel "The Volunteer Teacher" by Laura Olemá. The story takes place in a camp for volunteer teachers who join a campaign to promote literacy. The film focuses on several young people and their constant confrontation with a reality that has little to do with the idealized ideals they aspired to.

The driver Antonio, boasts of his sons: John, who shares his work as a taxi driver, Luisa, ladies hairdresser, Antonito, studying to be a lawyer, and Paloma, to be a housewife. But Antonio does not know that their children are not exactly as he thinks. The day Antonio finds out, confronts his wife and children and suffers a big disappointment. Since then no one in the family speaks to Antonio, and he believes that it is best to let them see for themselves that they made a mistake, but this does not result, since each will see their problems increased.

Some bizarre figures (bullfighters and future fighters, athletes and boxers) get together in a park from Madrid to improve and rehearse their techniques.