There's trouble in River City when a fast-talking salesman gets his heart stolen by the town librarian.The Music Man follows fast-talking traveling salesman, Harold Hill, as he cons the people of River City, Iowa, into buying instruments and uniforms for a boys' band that he vows to organize this, despite the fact that he doesn't know a trombone from a treble clef. His plans to skip town with the cash are foiled when he falls for Marian, the librarian, who transforms him into a respectable citizen.