What's the matter with Leo?" his father asks, when Leo can';t read, write, draw, eat neatly or speak. "He's just a late bloomer", explains his mother. And sure enough, one day in his own good time, Leo shows everyone how glorious it is to finally bloom.
When the neighbors start complaining, Max, a hippo, stops practicing his trombone, bass, xylophone, flute, harmonica, cymbals and synthesizer - until everyone starts to miss the noise!