After the events of Son of a Witch, Elphaba's orphaned bastard son Liir places his infant daughter into Glinda's care, and enchants her skin color so it loses its green tint.

The only person ever able to read the book was Elphaba, but it is believed that perhaps her lineage may possess the same talent. Munchkinland is also preparing to attack Loyal Oz, and is desperately seeking the Grimmerie, a large tome of spells capable of catastrophic results.

Glinda the Good's estate rests on the border of Munchkinland, and soon the manor is overrun with soldiers from Loyal Oz, preparing to attack Munchkinland with dragons. The Emerald City is now under the rule of Shell Thropp, the younger brother of Elphaba, while Munchkinland has seceded from the rest of Oz's union and the strife continues as Oz falls into a drought and Munchkinland has the only large body of water. Many years after Dorothy's departure, Oz has fallen into war. This novel presents an Oz in the middle of a civil war plagued with depression and adult situations, from the perspective of Rain, the young granddaughter of Elphaba Thropp, Maguire's reimagining of The Wicked Witch of the West. Frank Baum's Land of Oz incorporating elements from Baum's series as well as the 1939 film adaptation of the original novel. Out of Oz brings a conclusion to the narratives spread across The Wicked Years while providing a revisionist look at L. Out of Oz is the fourth and final novel in Gregory Maguire's The Wicked Years and was released on November 1, 2011.

Gregory maguire wicked series