Small-town woodworker Ava Collins and big city doctor Bex Leone both love Christmas. Some might go so far as to call them obsessed. They love Christmas music, Christmas food, Christmas carols, and Christmas movies. When the two women meet over a Thanksgiving dinner, it seems for a second they might have finally found their mistletoe match, but their initial connection goes wildly awry when they realize their versions of what constitutes an ideal Christmas differ as drastically as the places they choose to spend their holidays. Ava is to idyllic, homespun Vermont as Bex is to the flash and sparkle of New York City. What begins as a good-natured argument about who has the superior way to celebrate the season ends in a friendly bet: The country mouse and the city mouse will each split the season in an attempt to convince the other their way is the truest path to holiday happiness.

Ava agrees to spend two weekends on Bex's turf in Manhattan as long as Bex will visit her in the mountains of Vermont for the other two. For one whirlwind month, each woman works to showcase her favorite traditions, memories, and magic. As snowy days give way to starlit nights, Bex and Ava find the ideals that brought them together offer more common ground than either of them expected, but as they grow closer to one another, they begin to fear that in order to act on their deepening connection each of them may have to relinquish cherished parts of themselves.