A beautiful young woman living in an isolated fishing community on an island falls in love with an outsider, a train machinist. But her father, a violent religious fanatic interferes. Juliana (Maria do Rosario) is the daughter of a humble fisherman who procures magic powers. Her father is exploited by a heartless gringo who keeps the family in abject poverty. Juliana manages to win the heart of a railroad worker with her newfound talents. This melodramatic romance story is underscored by the symbolic class struggles between the rich and the poor and the poor among other members of the working class.