An old priest, who has old ideas, is intended to exercise the apostolate in a neighborhood in the suburbs of Madrid. There the revolutionary climate and anti-religious character of the congregation thwarts all his attempts to attract them. The Archbishop admonishes him and asks to renew his methods, using the example of a young priest of a modern parish. The old priest tries to apply in his environment what he has seen in the parish model, setting off a chain of events.
A small provincial town lives under the caprices of Don Justin, the local cacique. This forces the young Mariana to marry him, taking advantage of the fact that her nephew Juan, the boyfriend of the girl, is far away from military service. Upon his return, Juan is mocked and goes to a witch to assist him in his revenge.
A musical drama featuring a tragic love story. Relates a singer's rise to fame and her subsequent downfall because of the death of her lover.
