Albert Einstein, the son of an apple farmer in Tasmania in the early 1900s, is drawn to physics rather than the family business. His father shows him his grandfather's laboratory, a remote shed where he once brewed beer, and explains that bubbles in beer could change the world if someone could figure out how to make them reliably. In this setting, the idea of groundbreaking science begins to take shape.
After a night of heavy drinking, Einstein conceives a version of the famous formula, a playful yet radical notion of mass–energy equivalence as a way to split beer atoms and coax bubbles into existence. He spends all night hammering away at the concept, and when the idea finally manifests, the shed erupts in an explosion of glass and steam. He triumphantly reveals a glowing formula and a beer glass with bubbles, prompting his father to urge him to head to the Australian mainland to patent his discovery.
On a train to Sydney, the young scientist crosses paths with Marie Curie and Preston Preston, the pompous manager of the Sydney Patent Office. Marie is intrigued by Einstein’s ideas, while Preston greets him with a protective, when officious, skepticism. In Sydney, Einstein lodges in a brothel while the patent office proves reluctant to accept theoretical breakthroughs. He leaves to reconnect with Marie at the university, where he disrupts a professor’s work by erasing it and composing his own theory, earning Marie’s interest but drawing the professor’s ire. Preston, eager to control the flow of new discoveries, attempts to woo Marie with a lavish lifestyle, hoping to keep her away from Einstein’s disruptive genius. At a social club, Marie hints at her fascination with Einstein’s ideas, which only fuels Preston’s jealousy.
Preston enlists his clerk to secure Einstein’s formula, hoping to keep it safe, and eventually the Bavarian Brothers—brewmasters who want to profit from the breakthrough—are enlisted to safeguard the asset. Meanwhile, Einstein continues to evolve his soundscape, inventing rock and roll and an electric violin, deepening his bond with Marie through shared moments of joy and surfing on the beach, where she wishes the moment could last forever. Motivated by inspiration, Einstein conceives the theory of relativity on the spot, a revelation that leaves Marie spellbound.
Back at the institution, the pressure mounts as Preston schemes to use the keg with Einstein’s formula for personal gain. Einstein protests, but the Bavarian Brothers declare him insane and have him committed. His electric violin is destroyed, and he is kept isolated while Marie confronts Preston, who insists he’s acting for the greater good. Marie secretly infiltrates the facility as Einstein’s father appears in the shower room to confront the young genius, and she reveals Preston’s plot. When Einstein feels cornered, Marie leaves in disappointment, and he must rebuild his resolve.
Einstein reconstructs his instrument as an electric guitar, using it to bypass the security system and escape. He learns that Marie has returned to France, and he sails a small steamboat there to win her back by vowing to halt Preston. They escape together aboard a hot air balloon borrowed from the Curie family and head to a Nobel ceremony in Paris that same night, where many inventors gather in celebration.
At the ceremony, Charles Darwin announces that Preston is the winner for his beer bubble discovery, sparking tension as Darwin questions whether Preston truly understands what happens when an atom is split. Realizing the danger, Darwin urges Preston to stop, but Preston scoffs and starts the keg anyway. Einstein improvises by attaching his guitar to the keg to drain the pressure, while Marie urges caution. Einstein plays a blistering riff that disrupts the keg’s power, and Preston’s attempt to strike him is thwarted when Marie knocks him unconscious. A surge of energy radiates from Einstein, creating a spectacular glow and a massive explosion, yet he remains unharmed.
In the wake of the shimmer and smoke, the crowd cheers as Einstein and Marie share a kiss, while Preston is escorted away and committed. Back in Tasmania, Einstein returns with the keg and the Nobel Prize, telling his family that he intends to share the formula with the world rather than hoard it. Marie raises a thoughtful question about how governments might use the knowledge to develop atomic weapons, and Einstein, perhaps naively trusting in humanity, suggests that the world can choose how to govern itself. The moment concludes with him playing a rock and roll riff, leaving the audience with a sense of possibility, wonder, and caution about the future of science.
