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, Maguire's reimagining of The Wicked Witch of the West.

Munchkinland is also preparing to attack Loyal Oz, and is desperately seeking the Grimmerie, a large tome of spells capable of catastrophic results.

Brrr reunites Rain with her parents, but the reunion is short when it's brought to his attention that Dorothy Gale has returned to Oz, and is being placed on trial for the murder of Elphaba and her sister Nessarose.

Elizabeth Hand from the Washington Post wrote, "No summary could do justice to Maguire’s novel, which is hilarious, heart-wrenching and extremely poignant in its ending."

[2] Brian Truitt from USA Today praised the series, though criticized it for its length, writing: "While it meanders at times, Out of Oz is a satisfying finish to the "Wicked Years" saga.