Young Bart Collins lives with his widowed mother Heloise. The major blight on Bart's existence is the hated piano lessons he is forced to endure under the tutelage of the autocratic Dr. Terwilliker. Bart feels that his mother has fallen under Terwilliker's sinister influence, and gripes to visiting plumber August Zabladowski, without much result. While grimly hammering away at his lessons, Bart dozes off and enters a fantastical musical dream.

Jess Robin dreams of a career in popular music, but his father, Cantor Rabinovitch, forbids it, insisting Jess live as a traditional Jew and inherit his position at the synagogue. With the help of friend and professional musician Bubba, Jess gets a chance to go to Los Angeles and have famous singer Keith Lennox record one of his songs. Defying both his father and his wife, Jess leaves New York to pursue his dreams.