Nell Trim swore at the deathbed of her beloved sister to take cruel revenge on the dissolute rake James Fairbroder, Marquess of Lyth, who seduced her and abandoned her - disgraced and pregnant. To this end, the girl launches a daring plan - under the guise of a modest companion of the marquis’s mother, infiltrate his estate and find, steal and make public the scandalous diary in which he kept a list of his victories. However, how different is the charming young man she met in Litov's house, to the image that the girl drew in her imagination! Nell, who has unwittingly fallen under the spell of James and is experiencing increasingly tender feelings for him, begins to suspect that some terrible mistake has occurred...