John Pettibone (Droopy), a dog whose love of Dixieland music is not appreciated by those around him, has a lucky meeting with Pee-Wee Runt and his All-Flea Dixieland band at the circus.

An escaped lunatic, a mysterious swami, and various lovers all have designs on a famous opera singer.

Tom is conducting a symphony at the Hollywood Bowl when Jerry comes out to co-conduct.