As James (Jonas Chernick) dedicates himself to unraveling the mysteries of theoretical physics, he finds his life largely centered around his sister Meredith (Tommie-Amber Pirie) and the equally passionate scientist Courtney (Cleopatra Coleman). A pivotal moment arrives during a ride-share when James meets an enigmatic Uber driver, Jimmy (Daniel Stern), who claims to be his future self and carries an alarmingly profound message. He warns James that the relentless pursuit of his research could lead to disastrous consequences for his life. Initially skeptical, James feels a compelling urge to believe that his scientific exploration might hold the key to understanding the universe and secures a chance to work on Dr. Rowley's (Frances Conroy) prestigious particle accelerator project.
While James immerses himself in his work, Meredith urges him to address the lingering trauma caused by their parents' tragic death years ago. On the other hand, Courtney prepares to embark on an impressive journey to the Large Hadron Collider at CERN in Switzerland. Inspired by Jimmy’s prophetic insights, James attempts to re-evaluate his priorities, yet he remains adamant about furthering scientific knowledge.
Despite Jimmy's foreboding warnings, James’ obsession with his research deepens as he confronts the multifaceted nature of time travel. He discovers that Jimmy can only navigate backward through time, which emphasizes James’ solitude as he awaits his return to the present. The burden of these profound truths weighs heavily on him, especially when Jimmy hints that if James had genuinely altered his life's path, Jimmy wouldn’t still be caught in this temporal stasis.
As feelings for Courtney begin to bubble to the surface, James timidly asks her out but gets sidetracked by a spark of inspiration ignited by her presence. The moment slips away as his commitment to his research reasserts itself. As the tension mounts, Courtney prepares to leave for her own scientific endeavors at CERN.
In a frantic attempt to redefine the course of events, James fixates on earning Dr. Rowley's approval for their research project. Just when it seems the plot will follow a predictable route, Jimmy makes a shocking reappearance wielding a crossbow, determined to avert an impending disaster.
In a groundbreaking moment of realization, James understands that it is crucial for him to re-evaluate his life priorities, leading to Jimmy disappearing into the ether right before Dr. Rowley becomes a casualty of Jimmy’s desperate bid for a rewrite of history.
At a cozy café, as James cradles a playful puppy in his lap, the ambiance feels comfortably familiar. Suddenly, Courtney reappears at his table, their eyes meeting as she takes a soft bite of a buttery croissant. With a tone tinged with surprise and a hint of yearning, she whispers, “I can't believe you're here.” Yet, the ordinary café patrons fade into insignificance as James realizes he’s surrounded by alternate versions of himself, Courtney, and even the adorable puppy at his feet. These various incarnations of the trio seem to transcend time, merging fragments from different eras—creating an atmosphere where infinite possibilities converge harmoniously in this serene setting.
