Carlos is a young man from the São Paulo middle class who works for a big company during a time when foreign automobile industries were settling in Brazil. Shortly after, he accepts a job at a factory that makes automobile parts, where he becomes manager. To a certain extent, he is a family man who works hard, earns well and lives unsatisfied. Without any prospects in his life to change the condition he rejects, his last resort is escaping.
The arrival of Francis, who owns a factory of surgical material in New York, caused a real stir in a family composed by her grandfather, Pepe, the son, Jose, and grandson, Pepito. Pepito falls in love with her even though Francis consider him a child. But Don Jose is also in love with the American. This situation creates a difficult situation between parent and child, that Francis seeks to remedy returning to the United States. But the grandfather, Pepe, has the solution ...
As he shows a considerably higher interest in night life and vaudeville chorus girls than in textbooks, Gerardo Roquer is sent by his father from Madrid to the University of Santiago de Compostela, with the purpose of having him center in studying. There, Gerardo ends living in the "Casa de la Troya" boarding house, where he makes good friends in other students, and falls in love with the beautiful Carmiña Castro. But this love is not approved by her uncle and aunt, who prefer the foppish Octavio (with whom they have a debt) for her.
