When Clementine Clark, a rational and musically gifted young woman, is given the opportunity to join Irish megastar Halloran on his first US tour as a backup vocalist, she must decide whether to follow her dreams or settle for a more stable life. The tour is a whirlwind of glamour and loneliness, and Clementine finds herself drawn to the enigmatic Thomas Patrick Halloran, whose magnetic presence and poetic genius quickly get under her skin. As the two navigate their differences and form a deep connection, they must confront their pasts and decide whether to strike an unforgettable chord in each other's lives.