As Christmas approaches, the Cooper family plans to come together for their annual holiday celebration. The story centers around Charlotte and Sam, a married couple grappling with the challenges of keeping their decades-long marriage intact. Their daughter Eleanor is a struggling playwright trying to avoid questions about her personal and professional life, while their son Hank is a recently divorced father attempting to navigate parenthood and loneliness. Additionally, Charlotte's sister, Emma, wrestles with her own struggles and unfulfilled desires, sometimes crossing the line between right and wrong.

Each family member harbors secrets and personal battles, creating a complex web of emotions that they must confront during this holiday gathering. As the day unfolds, unexpected encounters and heartfelt moments transpire, bringing underlying tensions to the surface and forcing them to address their relationships with one another. Through a series of misunderstandings, humorous incidents, and poignant revelations, the Coopers ultimately discover the true meaning of family and togetherness.