The orphaned heroine, Emanuella, is young, rich, and beautiful. Haywood, after thoroughly engaging the reader's sympathies for her, puts her through cruel sufferings. Her guardian, Don Pedro, seeks to get control of her fortune by marrying her to his son Don Marco. Don Marco is stunted, deformed, and ugly, but a man of honour and feeling. He rescues Emanuella from the prison where his father has immured her, and eventually kills himself to convince others of her worth and virtue. His death produces his father's confession of his crimes, but no happy outcome for Emanuella. She endures want and deprivation, work as a governess, and betrayal by a female friend Berilla. She has an illegitimate child, Victorinus, by her beloved Emilius, and (after living long enough to show herself a strong and devoted mother) dies of a broken heart.