Jackie and Luke Harrison, played by Susan Sarandon and Ed Harris respectively, are navigating the challenging waters of post-divorce life while trying to secure the happiness of their two children, Anna (portrayed by Jena Malone) and Ben (Liam Aiken). The adjustments come harder than expected, especially with Luke now sharing his life with his new partner, Isabel, a vibrant and successful fashion photographer, brought to life by Julia Roberts.

Isabel is earnest in her attempts to forge a bond with Anna and Ben, but her well-meaning gestures are met with resistance, particularly from Anna, who continuously rebuffs her efforts to connect. Ben, marked by his playful mischief, complicates matters further as he tries to navigate the shifting dynamics. Isabel is cautious but somewhat contemptuous towards Jackie, believing that Jackie, a former publisher turned stay-at-home mother, compensates for her divorce by showering her children with excessive affection. In return, Jackie regards Isabel as nothing more than a competitive career woman, eschewing kindness in favor of an icy demeanor.

As tensions heighten, Luke proposes to Isabel, positioning her to become the stepmother of Anna and Ben. This decision stirs even greater conflict within the family, as Jackie grapples with her feelings of betrayal and jealousy. However, the stakes rise when Jackie is diagnosed with terminal lymphoma, a wrenching diagnosis that forces her to confront a torrent of painful emotions: the bitterness towards Isabel who she believes played a significant role in her family’s disintegration, and the heart-wrenching realization that her time to witness her children grow up is rapidly dwindling.

Jackie and Isabel find themselves in a precarious rivalry over parenting matters. This contention peaks when Ben goes missing under Isabel’s supervision, igniting Jackie’s indignation as she claims to have never lost him—a statement she later regrets as untrue. Despite the tension, an unexpected truce emerges as both women begin to recognize the reality of Isabel stepping in as a surrogate mother.

In a poignant turn of events, Jackie and Isabel find common ground. Their relationship begins to shift when Isabel confesses her admiration for Jackie’s maternal instincts, leading Jackie to acknowledge Isabel’s unique way of connecting with Anna. In a deeply emotional exchange, Isabel articulates her profound fear that Anna will only long for her mother on her wedding day. Jackie, with tears brimming in her eyes, shares her own fear of her children forgetting her, providing a profound and touching connection between them. Jackie reassures Isabel that while she will forever keep the memories of the past, it is Isabel who will nurture the family’s future.

The film culminates in a heartfelt Christmas celebration. Jackie, now weakened by her illness, receives intimate visits from Ben and Anna, where she imparts a final gift of love, assuring them that her spirit will remain with them as long as they hold onto her memory. In a moment of acceptance, Jackie invites Isabel into the family portrait, declaring, “let’s get [a photo] with the whole family.” This simple act marks a significant turning point, capturing the essence of their newfound understanding and collaborative spirit.

As the credits roll, the last scene encapsulates the film’s heartwarming theme of healing and acceptance, showcasing Jackie and Isabel, side by side, finally at peace as they embrace the challenges that lie ahead.