As George Monroe (Hayden Christensen) traverses the aged wooden planks of his family's coastal sanctuary, a space seemingly untouched by the relentless passage of time and the rhythm of the California tides, he finds himself ensconced in a solitary life marked by intentional disconnection. His long-standing avoidance of contemporary CAD technology has culminated in disconnecting him from the very architecture firm that was once his safe harbor. The principal owner's unwillingness to allow George to keep even a few cherished models triggers an emotional crisis, prompting George to destroy all except one in a moment of sheer frustration. Clutching the lone model tightly, he exits the firm, only to be engulfed by feelings of despair that lead to a sudden collapse, requiring urgent medical attention.
The prognosis is harrowing: advanced-stage cancer grips him, imposing a stark deadline on his life that forces George to reconcile his past and seek closure. In a resolute effort to reclaim some control over his fate, he decides to tear down the old family shack and replace it with something new — a symbol of his enduring will to fight. To accomplish this, he seeks the assistance of his estranged son, Sam (Kevin Kline), who is grappling with his own challenges, feeling distanced from his mother, Robin, and her affluent partner, Peter, whose wealth has created a chasm between them.
Sam's hesitation to assist his father isn't rooted in disinterest, but rather a deep-seated resentment towards George for withholding the truth about his terminal illness. As he grapples with this internal conflict, Sam becomes entangled in a series of self-destructive choices, including a reckless attempt at prostitution that nearly exposes him and results in a hasty getaway. In the midst of this tumult, Sam resorts to pilfering George's Vicodin, an act that foreshadows more turmoil on their shared path.
Once construction on the new home commences, Robin re-enters George's life, igniting a flicker of reconnection with her estranged husband. Alongside her, Alyssa, Sam's neighbor and classmate, joins the project, injecting youthful energy and a yearning for acceptance. Meanwhile, Kurt Walker, a local police officer and childhood friend of George, contributes his skills, as Sam's lively half-brothers, Adam and Ryan, add their unique zest to the effort.
Amidst the chaos, George gradually rebuilds his bond with Sam, transcending the mistakes of their shared past. However, the revelation of George's true health condition rattles Robin, sending shockwaves through her world. This news triggers anger and feelings of betrayal in Sam, compelling him to seek refuge in Alyssa's home during a tumultuous emotional upheaval.
As turmoil continues, neighbor David Dokos attempts to halt construction, citing concerns over the building's height exceeding regulations by a mere six inches. Yet, Sam, recognizing Dokos from his earlier escapade, seizes the chance to blackmail him, successfully thwarting Dokos' plans and allowing construction to proceed undeterred. While navigating the complexities inherent in his impending mortality, George finds unexpected refuge in the unrefined, yet ultimately healing, journey of rebuilding his life.
As the sun sets, draping a warm orange hue over the skeletal structure of the new house, Sam's enthusiasm ignites as he meticulously adorns it with Christmas lights. Delighted, he unveils his creation to George, who lies in a hospital bed, their faces illuminated by the glimmer of festive lights. The following morning brings more sorrow, as Sam returns to find Robin keeping watch over George, her eyes filled with the resignation of a night spent in worry and tears. As the day drags on, George's strength wanes, leaving a poignant stillness and sorrow in his absence.
Robin remains steadfast at George's side until the end, the embodiment of life's delicacy. Upon Sam's return, he learns from Robin of George's passing, a somber revelation that weighs heavily on him, challenging his understanding of legacy and responsibility. Subsequently, Sam inherits the property that has connections to his grandfather's past.
In a surprising turn of events, Sam decides to gift the property to a woman who had previously lived in a trailer park. This remarkable act resonates deeply, particularly given their complicated history — a tragic car accident caused by Sam's grandfather had irrevocably altered her life. This gesture of forgiveness and redemption not only transforms the woman's fate but also profoundly impacts Sam's journey forward.
