The movie begins with Sarah, Riley and Cat, who are all grown up now, reminiscing about their childhood memories of Christmas at Sarah's house. However, their nostalgia is interrupted when Sarah's father unexpectedly passes away, leaving the family home in financial turmoil and at risk of being sold.
Determined to save the house that holds so many precious memories, the three friends come up with a plan to restore it and turn it into a holiday destination. They also enlist the help of Sarah's brother, Jack, who is initially hesitant but ultimately becomes a valuable ally.
As they work together to renovate the house and attract guests, the friends face various challenges, including financial setbacks, personal conflicts, and unexpected romantic entanglements. Through it all, however, their bond only grows stronger, and they are reminded of the true spirit of Christmas: love, family, and the power of friendship.
The movie culminates in a heartwarming Christmas celebration at Sarah's house, with the friends surrounded by loved ones, grateful for all they have achieved together and excited for all the Christmases to come.