“The Wiz” tells the classic story hundreds of millions of people have read in the L. Frank Baum books and then saw in the much-beloved 1939 film “The Wizard of Oz,” but retold in an African-American/multicultural context. Dorothy, a young woman from Kansas, is swept up in a tornado and relocated to a fantasy world that is inhabited by munchkins, good and bad witches, and, of course, flying monkeys. She eventually takes a path down a yellow brick road to find a wizard who can help her go home and along the way meets a scarecrow, tin man and cowardly lion, who all learn to help one another.