Romance starts in Rio between a Mexican tenor being wooed for a Buenos Aires production, and an Argentine gal who has won a soap contest and who he thinks is rich.
Margarita, the nun of a cloistered convent in charge of handling the lathe, this is a rotating mechanism provided with a small window through which she delivered and received things from the outside without direct visual contact, she is seduced by a Don Juan and induced to escape with him .
The film is based on an old Argentine legend about an Aztec girl who is raped and murdered by vandals and dumped in a river. A flower blossoms at the place in which she was killed and misfortune falls upon the culprits.