Duke Ellington and Orchestra perform 'C Jam Blues'.

Beverly Ross, the switchboard operator at a local radio station, jumps at the chance to be the DJ for an early morning show before the soldiers at a nearby army camp assemble for reveille. Beverly, with her modern music, camp bulletins and chatter, is a hit with the soldiers. Beverly's younger brother and his two buddies are soldiers at the camp. The buddies vie for Beverly's attentions.