On Prince Pompadore's 18th birthday, his cake explodes, revealing a magic scroll, a magic mirror, and a doorknob. The scroll warns the prince that if he doesn't wed a "proper princess" within seven days, his entire kingdom will disappear. He and the kingdom’s wise elephant Kabumpo embark on a new adventure to the Emerald City to marry Princess Ozma. But when they finally arrive, they find the princess and her palace are missing! This is the 16th book of Oz, and the 2nd written by Ruth Plumly Thompson. This new hardcover edition of the 1922 book features a new cover and interior illustrations by Eisner nominated artist Sara Richard. No Oz collection is complete without it!