Seduced by dreams of making it big, Gretta (Keira Knightley) and her boyfriend Dave (Adam Levine) move to New York to pursue their passion for music. However, when Dave rejects her for the fame and fortune of a big solo contract, Gretta find herself alone and far from home.

Just when she’s decided to move back to London, life begins to look up when struggling record producer Dan (Mark Ruffalo) stumbles upon her singing during an open mic night. Captivated by her raw talent and inspiring authenticity Dan persuades Gretta to take a fresh approach to making music and together they transform the streets of New York in to their recording studio, giving their careers one final shot.