Struggling musician Jack Malik is at his wits' end. Despite years of dedication and the unwavering support of his childhood friend, Ellie, his dreams of stardom are fading. During a worldwide blackout, Jack is struck by a bus, and when he wakes up, he discovers something unthinkable: he's the only person on Earth who remembers The Beatles. In this altered reality, the iconic band never existed, leaving their timeless catalog of music absent from history.

Seeing an opportunity, Jack starts performing the songs of the forgotten band, passing them off as his own. His performances of these classics quickly take the world by storm, vaulting him to a level of fame he'd previously only imagined. As his star rises, Jack is thrust into the high-stakes music industry, grappling with the complexities of his new life while navigating fame, fortune, and the ethical dilemma of claiming the legendary music as his own creation. Through it all, he must confront his feelings for Ellie and what success truly means to him.