Rico, a laborer, illicitly boards a train bound for the city, seeking a departure from his mundane existence. This marks the inception of an adventure wherein our protagonist becomes entwined with a prostitute who initiates him into the realm of smuggling.

A young singer falls madly in love with a man, with whom she forms a family. Problems, however, are not long in coming when she receives unfair accusations.

A writer is given custody of his editor's daughter after she is orphaned. Once she grows up, they become romantically involved.

This musical comedy tells the story of two men whose friendship (whose beginning is told in "A toda máquina") is affected by assumptions love triangles and misunderstandings between the two, however, the value of that friendship overcomes all difficulties.