In the magical Christmas season of Springfield, Homer and Marge decide to host a spectacular party at their home, something that has become a family tradition. However, chaos ensues when Bart, in a fit of rebellion, sets out to sabotage the celebration by trying to convince his friends to hold a talent contest at school, focusing on irreverence and absurdity.
Meanwhile, Lisa, always the academic, embarks on a mission to discover the true meaning of Christmas and joins a group of students to create a play that upholds the values of the holiday, which causes tension with Bart and his friends. As the family party approaches, the two versions of the celebration clash, leading to a hilarious and unexpected confrontation.
With the help of iconic characters such as Grandpa Simpson and the ever-clumsy Barney, the family embarks on a series of unbelievable adventures that include a trip to a mall where there’s a ruckus with Santa Claus and even an unexpected visit from a famous musical artist who becomes part of the show.
What begins as a party transforms into a reflection on family, tradition, and what it truly means to celebrate Christmas. In the end, Springfield will come together to celebrate in their own way, resulting in a conclusion that will make fans of all ages laugh and feel emotional.