The tall and gangly "Hot Breath Harry" wows the jazz clubs until he is drafted into the army. They can't tell the difference between a trumpet and a bugle, so he is charged with blowing the reveillé at 0500hrs. That doesn't exactly make him popular - and after an altercation with an hatchet he reckons that he might have more success jazzing up this early morning wake up call so he uses a trumpet!...
