The Davenport sisters, Jenna, Kerry, and Mandy, have each gone their separate ways since their parents' divorce. Jenna is a successful lawyer living in the city, Kerry is a struggling actress in Los Angeles, and Mandy is a single mom in their small hometown. Despite their differences and strained relationships, they all come home for Christmas when their father, Tom, wins the lottery.
Tom is overjoyed at the prospect of having his daughters together for the holidays, but his happiness is short-lived when their mother, Carol, who suffers from dementia, misplaces the winning lottery ticket. The sisters are initially hesitant to help their parents search for the ticket, as they are still harboring resentment towards each other and their parents for the breakup of their family. However, as they work together to locate the ticket, they begin to bond over shared memories and experiences from their childhood.
As they search high and low for the missing ticket, the sisters confront their past hurts and misunderstandings, ultimately coming to a greater understanding and appreciation of each other. Along the way, they also discover the importance of family and forgiveness, as they realize that their relationships with each other are far more valuable than any material possession.
In the end, Carol's memory is triggered and she remembers where she put the ticket, leading to a joyful reunion as the family celebrates their good fortune and newfound unity. The Christmas Lottery proves to be a turning point for the Davenport sisters, as they learn to let go of the past and embrace the love and connection that has always been there between them.
