The Honorable Miss Lucilla Iverson is an exceptionally unconventional young heiress trying her best to be unexceptionally conventional despite her love of horses and racing curricles. When she attracts the attention of a hardened older bachelor, a duke, no less, it sets the ton afire with anticipation. Many young bucks seek her approval, including a notorious (and now penniless) gamester who intends to marry Miss Iverson and her money whether or not she agrees. On an inside track for Lucilla's attention is Oliver, Lord Hartwell, despite a near miss at running her over while driving his phaeton in the company of his cousin, the handsome and mysterious duke. Which of the three will win her heart and hand, to live happily ever after? That is the question!