Song One

Upon learning that her brother, Henry (Ben Rosenfield), is in a coma, a young woman, Franny (Anne Hathaway), tries to reconnect with him through his love of music. Along the way, she strikes up a relationship with Henry's favorite musician, a brilliant but lonely singer-songwriter (Johnny Flynn), struggling with writer's block.

Together they use Henry's journal entries to explore some of Brooklyn's best underground venues, bonding over the music and finding inspiration from each other.