As the beloved stepdaughter of the Earl of Castleton, Lady Mariah Lyons cherishes her home at Plumford Manor, but her idyllic world will be threatened when the estate passes to Cyril Lightbourne, a childhood friend she hasn't seen or heard from in years. Once, Mariah dreamed their friendship would kindle into something more, but that was before she heard Cyril was courting the cruelhearted Lady Pearl. Now Mariah is willing to welcome him as a friend and pray he will be the heir her stepfather needs, but she'll keep her heart locked safely away from anyone with such poor taste.

Cyril Lightbourne has long avoided returning to Plumford Manor, yet he reluctantly arrives in time for Christmas. When his friendship with Lady Mariah reignites, he finds himself caught between his affection for her and her family's misunderstanding of his attachment to Lady Pearl. Then, more trouble arrives in the form of a Danish lord on a mission to win Mariah's hand by Christmas. Will the magic of the holiday season help lead to the discovery of true love, or will duty to country leave all longing for what could have been?