Two stage robbers impersonate the heirs to a gold mine but end up defending the families they intended to rip-off.

Inspired by the American gangster films, a group of thugs decides to dock the Bank of Spain. "El Rubio" explains to his men that, to commit the armed robbery, they will have to dig a gallery in the Cibeles. But, due to the threats of a rival band, "El Rubio" decides to disguise itself and pretend to be one of the most famous actors of the moment.

A girl has two suitors: a famous bullfighter who is in love and rejecting a pawn. His relationship with the bullfighter is hampered by the harassment to which he submits. After suffering a serious catch, the bullfighter lifesaving through the locket she gave him.

Don Jose disguises himself as Zorro, the masked freedom fighter, who tries to protect his people from the wrath of an evil military officer who is using his position to his own advantage.

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.