Stephen Hawking’s 21st birthday party becomes the unlikely spark for a profound connection with Jane Wilde, as she is drawn to his vast curiosity about the stars and the universe. The pair share a magnetic pull, but the moment of wonder is brutally interrupted when Stephen suddenly cannot stand, and a hospital visit reshapes the course of their lives. Doctors deliver a devastating diagnosis: Stephen has motor neurone disease, and the prognosis is bleak—doctors don’t expect him to survive more than two years. He returns to Cambridge to face a term that will continue without him, and the looming question of a PhD subjects his mind in a way nothing else can.
Back on campus, Stephen struggles to keep up with the rapid pace of academic life. He finds it impossible to pretend that everything is fine, rejecting the steady hands of his supervisor Dennis Sciama and sinking into a deep, isolating depression. Yet the spark of hope remains, partly sustained by Jane’s unwavering faith in him, which helps him cling to something meaningful as his body weakens. The atmosphere of the time is dominated by the Steady State theory, a bold claim about a universe with no origin, championed by the outspoken Yorkshire professor Fred Hoyle, a public figure of science television who becomes a foil and a focal point of Hawking’s growing skepticism.
One evening Hawking glimpses an early paper by Hoyle and, through careful scrutiny, spots a mistake. He challenges Hoyle after the lecture, and the public fracas rattles the department while also giving him a hard-won rush of confidence. Around this time, a fresh perspective arrives in the form of Roger Penrose, whose topological approach—focusing on shapes rather than equations—opens new doors for Hawking. Penrose’s fascination with the life and death of stars leads to a remarkable idea: the behavior of collapsing stars might reveal something fundamental about the universe itself. Hawking’s mind, pressured by illness yet energized by possibility, begins to see a path toward a radical theory: what if the universe began with a bang rather than simply existing without origin?
With renewed purpose, Stephen embraces Penrose’s insights about singularities and the possibility of tracing the universe’s history backward in time. He harnesses this new lens to forge a brilliant PhD thesis with implications that reverberate through cosmology. Despite his deteriorating health, he writes, studies, and maintains a stubborn resilience, bound to Jane through marriage proposals and a stubborn, almost defiant will to survive. The result is a story of scientific awakening that pairs intimate personal endurance with a leap in understanding the cosmos.
Interwoven with Hawking’s journey is a parallel, real-world arc: in 1978, Arno Allan Penzias and Robert Wilson recount, in Stockholm, how their radio-telescope work uncovered a faint, pervasive signal from space—the leftover glow of the universe’s earliest explosion. This discovery provides crucial empirical support for the big-bang theory Hawking is beginning to articulate, cementing a turning point in how humanity comprehends its origins. As the film threads these two strands together, it paints a portrait of a man who, despite a daunting diagnosis, helps usher in a scientific upheaval that changes the way we understand space, time, and our own place within it.
Today, the consensus in science holds that the universe started with a Big Bang, billions of years ago, and the narrative of two lives—one intimate and fragile, one giant and universal—converges to tell the story of how a young student from Cambridge helped transform our view of reality.
