Maria, is a girl raised by the loving care of a poor couple but without knowing anything about her real parents. She is in love with Giorgio, a boy from a good family, who however has also aroused the interest of the intriguing Edvige who frequents bad company including jealous Roberto.

L'innocente maria viene accusata ingiustamente di omicidio. Il procuratore che cercherà di farla condannare non sa di esserne il padre.