Henrietta is a strong willed young lady who will not give in to her aunt and marry the suitors she proposes. She runs away and adventure ensues. However she meets one young man who she is quite taken with but he does not share all about himself and Henrietta finds herself in some tricky situations.

The novel formally inverts Don Quixote: as the don mistakes himself for the knightly hero of a Romance, so Arabella mistakes herself for the maiden love of a Romance. While the don thinks it his duty to praise the platonically pure damsels he meets (such as the woman he loves), so Arabella believes it is in her power to kill with a look and it is the duty of her lovers to suffer ordeals on her behalf.