Catrasca (Jorge Porcel) is a man who works in a restaurant and in his spare time helps in a children's home. His problem is that he carries a family tradition that makes him cause catastrophes in his path, one of which takes his boss (Adolfo García Grau) to the hospital. Upon leaving the hospital, Catrasca is run over by Graciela (Graciela Alfano), the daughter of Professor Galíndez (Osvaldo Terranova). This is how he meets this professor, who has a formula that says he will be the salvation of humanity, so he is the object of persecutions by villains such as Dr. Linda Winters (Moria Casán).

An influential mob boss and a cabaret star team up to increase his power.

The story about a family that must maintain an insatiable grandmother.

A man and his family get rich thanks to mysterious promissory notes.

An impulsive actress abandons a film shoot and is replaced by a dressmaker, and the former's husband hires her to impersonate her in front of his future in-laws.

The story revolves around the relationship of Italian immigrants and Argentines. Nostalgia for his country of origin and life in a strange country. It is a call for the union of immigrants that evokes sentimentality. The film conveys the sensation of the musician, whom an Italian immigrant listens to, and feels "understood and unconditionally loved"

An angel who comes down to earth in the form of a woman lives a love story.

A prostitute persecuted by the police, receives the interested protection of a greedy merchant. He takes refuge in his house one night and meets his nephew, a sensitive boy who wants to be a musician.

A hotel waiter, a femme fatale and a failure.

The plot reflects the figure of Pascual Contursi, tango poet. In love with a singer, he leaves his wife and son to go with her. Some time later, the singer leaves him and he composes the tango that gives the film its title.