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.

As Biltmore House opens for the first time on Christmas Eve 1895, 13-year-old Elizabeth and her family are holiday guests. When she notices Michael, a fellow teen caught trespassing by the staff, Elizabeth comes to his rescue by claiming to know him, much to his relief. The two share an instant connection and set out to explore Biltmore but Michael inexplicably vanishes. Twenty years later, Elizabeth is spending Christmas at Biltmore and this time, is accompanied by James, a suitor her Aunt Maysilee is keen for her to wed. When a stranger asks Elizabeth to dance at the Christmas gala, she’s shocked to discover it’s Michael. Thrilled to reunite with her friend, she throws herself into his arms. But the world around her changes in an instant when Elizabeth is transported into the modern world with Michael, a tourist from the present day who had traveled to the past 20 years prior with the help of a magical hourglass in Biltmore’s library.