Clayton feels most alive when he's with his grandfather, Cool Papa Byrd, and the band of Bluesmen -- he can't wait to join them, just as soon as he has a blues song of his own. But then the unthinkable happens. Cool Papa Byrd dies, and Clayton's mother forbids Clayton from playing the blues. And Clayton knows that's no way to live. Armed with his grandfather's brown porkpie hat and his harmonica, he runs away from home in search of the Bluesmen, hoping...