A Miracle Before Christmas is a holiday romantic comedy that follows the story of Mercedes Wright, a successful and well-known relationship therapist who specializes in saving other people's marriages. However, she is unable to fix her own relationship problems with her husband, Damon.
On Christmas Eve, after receiving a visit from an angel named Gabriel, Mercedes wakes up to find herself in an alternate universe where she is unmarried and living her dream life. She soon realizes that her perfect world comes at a price, and must figure out a way to get back to reality and save her marriage before it's too late.
Through her journey back to her own reality, Mercedes is forced to confront the flaws in her relationship and see things from a different perspective. Along the way, she meets different characters who teach her valuable lessons about love, forgiveness, and the true meaning of Christmas.
As Mercedes races against time to save her marriage, she must use the magic of Christmas and the lessons she's learned to finally fix her own problems and find true happiness with Damon.