A snake-charmer falls in love with a circus trapeze artist who trains her and has her debut in this discipline.

Marucha (Sarita Montiel) has had a shattered face since childhood, but she has a beautiful figure and covers half of her face with her hair. She is a singer and performs in neighborhood theaters. Marucha and Ramon are professionals in crime.

Luis el Roto is a laborer who, due to a lack of money, cannot marry his girlfriend Rosa; they live in a poor alleyway with their respective mothers. Luis is loved by the prostitute Carlota, and for this reason he despises the pimp Rodolfo, who beats Luis in the public restrooms. Tragedy looms over Luis.

Melodrama based on the homonymous novel by the Spanish writer José María Carretero Novillo (El Caballero Audaz), which tells a romantic story about a pair of lovers who endure great suffering in their attempt to be together.

A widow remarries... and then her missing-presumed-dead first husband reappears.