When water lines break at Temple Beth Am, it leaves its members in need of a place to celebrate Hanukkah. Across the street, St. Joseph's Episcopal Church is quick to open its doors and offer shared space for the holidays. With the last night of Hanukkah and Christmas Eve falling on the same day this year – something that rarely happens – the reverend and rabbi choose to offer a joint service for their congregations. But that means Nikki Roberts, St. Joseph's youth choir director, must team up with Jake Cohen, the substitute youth choir director from Temple Beth Am, and put on a single music program. These two are old high school rivals and together, they're ready to compete for the top prize. That's not helping matters at a time when partnership matters most. To lead a successful fundraising effort for the temple, Nikki and Jake have to put aside their differences and learn how to work together. In doing so, they discover teamwork can move mountains and open hearts, including their own. On their big night, Nikki and Jake find a way to unite people through the power of song and prove that coming together is the best way for everyone to celebrate the holiday season.

When a baby boy shows up on their doorstep days before Christmas with a note written specially for them, Erin and Kelly must learn how to navigate their new relationship and career dynamics while unexpectedly caring for a newborn. As the couple spends more time with the baby as a temporary solution until he can be placed permanently or they can find his mother, they begin to realize that they want to adopt him themselves and go about navigating the complicated world of fostering to adopt all while their business is booming at the busiest time of the year, Christmas.