Contemporary screenwriter Lucy Hardgrove is hired to pen the remake of the holiday classic His Merry Wife!, which was shot at the renowned Biltmore Estate. Taking a tour of the grounds, she accidentally knocks over an hourglass, transporting her back in time to 1946, right when His Merry Wife! is being filmed.

Everything Ivy Morgan thought she knew has been turned on its head. If she doesn't figure out who she can trust-and fast-it's not only her heart that will be torn apart, but civilization itself.

Ivy Morgan, a college student in New Orleans, falls for Ren Owens, the last person she expected to enter her rigidly controlled life.

In 1951, a doctor wants to make the holiday special for his worried wife before he is shipped out to serve in Korea, but when she suffers a minor fracture to her arm his carefully planned out Christmas Eve plans are upended. In 2003, a newly married couple who are always in agreement about everything hosts two sets of in-laws for Christmas Eve for the first time and find that they may not have had as much in common as they thought they did. And in 2024, a couple tries to arrange special Christmas surprises for each other but keeping them a secret may be harder than they thought.