When Dorothy triumphed over the so-called Wicked Witch of the West in Frank Baum's tales, we heard only Dorothy's side of the story. The Wicked Witch we think we know is the predictable, green-faced villainess straight out of MGM's imagination. But there's more to the story than that. Where did the Wicked Witch come from? How exactly was she wicked? Why shouldn't she want her sister's charmed shoes? And, most important, what is the true nature of evil?

Years before Dorothy and her dog crash-land, another little girl makes her presence known in Oz. This girl, Elphaba, is born with emerald green skin - no easy burden in a land as mean and poor as Oz, where superstition and magic are not strong enough to explain or to overcome the natural disasters of flood and famine.

But Elphaba is smart, and by the time she enters the university in Shiz, she becomes a member of a charmed circle of Oz's most promising young citizens: her roommate Glinda, a dippy socialite with a knack for sorcery; Boq, the lovelorn Munchkin; Fiyero, a tribal prince from the primitive West of Oz; and Nessarose, Elphaba's beautiful, religiously witchy sister, who lacks nothing save two arms and the spirit of compassion.

Elphaba's Oz is no utopia. The Wizard's secret police are everywhere. Animals - those creatures with voices, souls, and minds - are threatened with exile. Young Elphaba, green and wild and misunderstood, is determined to protect the Animals - even if it means combating the mysterious Wizard, even if it means risking her single chance at romance. Ever wiser in guilt and sorrow, she can find herself grateful when the world declares her a witch.

And she can even make herself glad for that young girl from Kansas.