Cindy and Tom Baer-Neil are a recently married couple who are excited for their first Christmas together as a blended family. Cindy's children, Lizzie and Tim, are thrilled to have a new father figure in their lives, while Tom's children, Jenna and David, are hesitant to accept their new stepmother.
As Christmas approaches, the family starts to clash over decorations, traditions, and where to spend the holidays. Lizzie and Tim want to continue their family's traditions, while Jenna and David want to start new ones. Cindy and Tom try their best to keep everyone happy, but tensions rise as they struggle to balance everyone's needs.
To make matters worse, Cindy's ex-husband shows up unexpectedly, throwing a wrench in their plans. As the family deals with these challenges, they start to learn the true meaning of family and the importance of coming together during the holidays.
In the end, they are able to put their differences aside and create a new Christmas tradition that incorporates both old and new traditions. The family realizes that they may not be perfect, but they are perfect for each other. Our First Christmas is a heartwarming movie about the joys and challenges of blending families during the holidays.