Domingo means "Sunday." This film can only be appreciated through its final stage - the solemn celebration of Valentine's 15th birthday - the granddaughter of Donna Laura - a once rich woman whose fortune has declined in recent years. They have such a family tradition - to celebrate 15 years of any teenager, gathering all relatives in a country estate.
This short scene is preceded by a long Saturday-long movie as an image of everyday life - with lazy clarification of relationships, drugs, teenage sexual preoccupation, disrespect and harassment of servants.
Old man Jose, who has worked for this family all his life, borrows a drink from the store for the holiday, and Donna Laura treats him as a worn thing. No one will remember the old man when the room is flooded with electric light during the dance, but everyone will start to scold the socialists who came to power when the lights go out. . .