Directed by Sara Gómez, the film mixes documentary-style footage with a fictional story that looks at the poor neighborhoods of Havana shortly after the Cuban Revolution of 1959.

[1] Final work was initially credited to Tomás Gutiérrez Alea and Julio García-Espinosa before its posthumous release in 1977.

[3] Yolanda, a female teacher, cannot find the best methods to teach the marginalized children of the Havana slums because of their different origins.

Mario, a worker in a bus factory and a typical macho man, is confronted by Yolanda's instinct for emancipation.

Their relationship portrays the idea that racism, sexism, and class-based prejudices must be demolished in order to succeed.