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,...

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!