In December 1973, Ralph "Ralphie" Parker, portrayed by Mark Arnold, is a Chicago-based writer facing a daunting creative block while working on his first novel. His wife, Erinn Hayes, and their two children, River Drosche as Mark and Julianna Layne as Julie, have grown accustomed to his long absences, which stem from his obsession with getting his manuscript right. Unfortunately, repeated rejections from publishers leave Ralph feeling increasingly despondent about his writing aspirations.
The family's seemingly stable life is shattered when Sandy receives the heart-wrenching news that Ralph's father, known as the Old Man, has passed away. Overcome with sorrow, they set off to Hohman, Indiana, to commemorate Ralph's father and to reunite with Sandy's relatives. During this journey, Sandy assigns Ralph the challenging task of writing his father’s obituary while also reviving the family's cherished Christmas traditions.
Ralphie's kids soon develop an enchanting bond with the Bumpus children next door. However, their innocent fun is soon interrupted by two bullies on a snowmobile who ruin their snowman-building adventures. Back in Chicago, Ralph reconnects with his old friends, like Scott Schwartz as Flick, who now operates his father’s tavern, and R.D. Robb as Schwartz, who still lives at home and has accumulated quite a bar tab.
As the holiday approaches, the Parker family faces a crisis when Sandy slips and injures her ankle while preparing for a night of ice skating. Determined to make Christmas perfect, they trek to Higbee's department store where Ralph remarkably purchases everything on Mark and Julie’s wish lists while engaging with the cheerful Santa Claus.
The trip home is anything but smooth, with Ralph's car overheating and leading to an unexpected snowball fight, resulting in Julie needing a temporary eyepatch after a visit to the hospital. Upon returning, they are dismayed to find their car has been broken into, leaving them without the presents they had just acquired.
In Flick's tavern, Flick presents Schwartz with an opportunity to erase his debt by performing a daring sled jump, which he accomplishes successfully. However, chaos ensues when Mark sustains a broken arm sledding down a nearby hill. Just as Ralph faces rejection from yet another publisher, he finds encouragement from his mother and Sandy, reigniting his determination.
Motivated by memories of past Christmases with his father, Ralph resolves to write a heartfelt piece instead of a traditional obituary but needs to defer this task to prepare for Christmas Day. In a creative twist, Mark and Julie take things into their own hands by crafting a towering snowman that brings poetic justice to their tormentors, leading to a hilarious crash.
As Christmas Eve descends, a moment of melancholy hovers over the family when the star atop their tree breaks. Ignoring Sandy's pleas and guided by his mother’s wise words, Ralph sets out into the night to find a replacement. His search leads him back to Flick’s tavern, where he risks breaking in to reclaim the star but encounters an unexpected obstacle in the form of Zack Ward as Officer Scut Farkas, who brings with him a hint of past reckoning.
Meanwhile, in the basement, Sandy uncovers a treasure trove of neatly wrapped gifts placed there by the Old Man. As Christmas morning breaks, the family is elated to discover not only these hidden gifts but also the joy of the season.
Overwhelmed by newfound recognition for his newspaper column, Ralph is knocked off balance when Sandy reveals she submitted his father's manuscript to the local paper, leading to a surprise syndication offer that suddenly seems to pave the way for his dream of becoming a full-time writer.
Finally, as Christmas dinner comes to a delightful close, the Parker family embraces the warmth of community as townspeople join them. After their meal, the family encourages Ralph to share the story of his father. Settling into his father's beloved armchair, Ralph begins a heartfelt reading that beautifully echoes Jean Shepherd's iconic narration from the original film, leaving a lasting impression of nostalgia and warmth that fills the air long after the evening concludes.
