The Duncan family travels to Palm Springs for Christmas, hoping to spend time with Amy’s parents while navigating the familiar whirl of family dynamics. Teddy Duncan is eager for a sliver of independence and secretly longs to join her best friend Ivy Wentz on a Florida spring break. Amy is cautious about Teddy growing up too fast, and she refuses to let her daughter travel alone. A glimmer of possibility surfaces at the airport when their dad, Bob Duncan, learns that Teddy could still go if she buys her own ticket, and the idea starts to take shape.
On the plane, the mood shifts as the crew announces an overbooking situation. Teddy volunteers to relinquish her seat in exchange for a free ticket, hoping to clinch a chance at Florida. In a surprising turn, Amy also decides to step back from the Christmas routine and follows Teddy, setting off a chain of impulsive choices. A check-in desk encounter reveals that the next flight to Palm Springs won’t be available for three days—after Christmas—so the sisters pivot to plan B. A heated confrontation with a staff member lands Amy and Teddy in security, and the plan to fly out quickly collapses. The two sisters decide to ride the bus instead, even as the rest of the family moves forward with the Palm Springs visit.
When the family arrives, tensions ride alongside the yuletide cheer. Petunia, Amy’s mother, doesn’t hide her disapproval, and the household is rattled by Charlie’s mischief, PJ’s sunburn from an ill-suited suntan oil mistake, and Gabe’s playful, high-stakes attempt to teach Hank how to master the video game Galaxy of Death, which ultimately consumes Hank’s attention in ways neither anticipated. The bus trip proves chaotic too; motion sickness and a clash of expectations culminate in Teddy and Amy being kicked off, leaving them stranded far from home.
Desperation drives Teddy and Amy into a string of misadventures. They rent a battered Yugo that ends up wrecked, forcing them to hitchhike. An older couple offers a ride in their minivan, and a telling moment occurs when the woman accurately senses that Amy is pregnant, a revelation that shocks Teddy but also signals a shift in their shared journey. In Las Vegas, the sisters discover that their luggage has been stolen, and the emotional tension thickens as they cling to each other in the face of setback. Their attempt to salvage Christmas leads to a spontaneous street performance—decorated with Christmas carols and staged squabbles—that ultimately helps them reconnect.
Around the dinner table, Amy reveals a longing not to ruin Christmas but to protect Teddy’s childhood. Teddy, in turn, apologizes for earlier decisions, and Amy reassures her that Christmas can still be meaningful. The plot thickens as they cross paths with Jordan, a girl who has become stranded after running away from home to attend a cross-country music festival. Moved by Jordan’s plight, Amy reaches out to Jordan’s mother, mending a fragile rift and offering Jordan a way back home in time for Christmas. Teddy hands over her own plane ticket to Jordan, a gesture that signals Teddy’s growing sense of responsibility, and Amy begins to acknowledge her daughter’s capabilities.
A desert road detour further complicates the day: PJ, Gabe, and Bob are mistaken for captives by a paintball crew led by Chuck Jablowsky, the creator of Galaxy of Death, who hosts a paintball tournament every Christmas Eve. Once freed, Gabe persuades PJ and Bob to join the tournament, leveraging his knowledge of the game to secure a surprising victory. The triumph leads to a helicopter ride arranged by Jablowsky to locate Teddy and Amy, bringing the trio together again in a dramatic rescue that culminates at a diner where the family finally reunites.
As the family reconnects, Hank’s presence—along with Petunia and Charlie—helps seal the moment. Hank’s practical, if imperfect, gaming insight and Charlie’s quiet charm become counterpoints to the holiday chaos, and Petunia reveals that she found a star-shaped tree topper that had been trapped in Charlie’s car seat mechanism—an emblem of small, stubborn Christmas miracles. In a moment that cements the film’s heart, Amy announces that she is expecting another baby, and the family celebrates with a renewed sense of togetherness rather than perfection.
On the way home, the day’s recurring theme repeats: the flight is once again overbooked, and a free ticket tempts Teddy to step back onto a plane. Bob is sent after her with a lighthearted promise to return by New Year’s Day, and Amy’s warm smile hints that they’ve learned to trust the unpredictable currents of the holiday season. The journey ends with a quiet confidence: Christmas may be imperfect, but for the Duncans, it remains deeply, joyfully meaningful.
