[2] Starring Germán Cobos and Italian actress Serena Vergano, it was shot in 35 mm in black and white in Castelldefels, Sitges and Barcelona.

Antonio, a young man with a modest job in a small town, leads an ordinary monotonous existence until he is transferred to Barcelona to work in a firm of architects.

[1][3] The script was written by Aranda, Gubern and their mutual friend Ricardo Bofill, an architect also associated with the Barcelona School.

[2] The screenplay was loosely inspired by F. Scott Fitzgerald's the Great Gatsby in a portrait of Barcelona's upper class seen from an outsider coming from the provinces.

Although Gubern worked on the screenplay and prepared the scenes to be shot each day, the actual direction of the film was completely in Aranda's hands.

Serena Vergano, an Italian actress who had recently came to Spain to make the film El Conde Sandorf (1963), was chosen for the female lead.

Brillante Porvenir is set within a neorealistic aesthetic, following in the footsteps of the Italian neorealism and the work of Michelangelo Antonioni, who was then popular in the art house circuits.

Brillante Porvenir aspired to be a chronicle of Barcelona's upper middle class from the point of view of an outsider, a newcomer who arrives from a provincial background.