Miss Harriet Hancock enjoys playing the role of eccentric heiress, using her wealth and influence to cleverly and anonymously better the lives of those in Newmarket. Though she keeps people at a distance to protect a years-old secret, when her friend pleads for help on a personal project, Harriet can't resist.

Stable hand Jonas Fitzroy would do anything for his twin sister, even if it means seeking out the woman whose meddling ways have made him wary and suspicious. The last thing he expects is for Miss Hancock to request his help in writing a book. Intent on revealing her underlying plan, Jonas agrees.

As they work together, an unexpected friendship forms. But when things for once don't go according to Harriet's plan, she's left wondering if good intentions might not be enough. Is there a way to mend the broken pieces of her life? And will Jonas give her another chance at his heart?