Gretta, a budding songwriter, finds herself alone after her boyfriend Dave ditches her. Her life gains purpose when Dan, a record label executive, notices her talent.
A boy growing up in Dublin during the 1980s escapes his strained family life by starting a band to impress the mysterious girl he likes.
Susannah Cahalan, an up-and-coming journalist at the New York Post becomes plagued by voices in her head and seizures, causing a rapid descent into insanity.