A young, classical-trained musician, Peter Crane, transfers from the Conservatory to Clinton High School, where he finds his music in conflict to that of the high school's world of jive and Hep Cats. Claire falls for Peter, who is warned to stay away from her by Grant Saunders. Later, for fear of hurting his hands, Peter backs down from a fight with Saunders and is deemed a coward by Claire and his classmates. He also goes home that day to find that his father has been killed in action overseas. He turns to jive and is soon leading the school band, which is entered in a national contest. On the night of the finals competition, the band, through an accident, find they have no instruments. Peter rushes to his old professor at the Conservatory, who lends him the instruments from a Symphony Orchestra he conducts.