In 1988 New York City, Roberta Guaspari, a recently divorced violinist, lives with her two sons, Alexi and Nicholas Tzavaras, and her mother, Assunta Guaspari. With Assunta's encouragement, Guaspari attempts to rebuild her life and is recommended to the head teacher of East Harlem's Central Park East School. Despite having little experience in actual music teaching, she accepts a substitute violin teaching position at Central Park East. With a combination of her toughness and determination, she inspires a group of children, and their initially skeptical parents. The program slowly develops and attracts publicity, eventually expanding to Central Park East II and River East Schools.