The American ballet sensation, Miss Serendipity Shaw, has traveled to England at the invitation of the Duchess of Abernathy and her husband, Mr. Lewis Duffield. She came to perform and experience an English Christmastide, but when she meets the dashing and brooding Earl of Dayton, everything changes.

Wesley Jackson, Earl of Dayton, has never been a fan of the Christmas season. When his close friend Lord Luvington urges him to attend a Christmas house party, he accepts the invitation despite his reservations. Little does he know there will be an irresistible American beauty in residence - one whose sweet smile threatens all of his well-constructed defenses.

Determined to bring the magic of Christmas into the earl’s life, Serendipity takes every opportunity to do so. The more time she spends with him, the further in love she falls. She never planned to give Wesley her heart. But now that she has, she means to have his in return.

Can she thaw his frozen heart before Christmas passes and she must return to America?