September misses Fairyland and her friends Ell, the Wyverary, and the boy Saturday. She longs to leave the routines of home and embark on a new adventure. Little does she know that this time, she will be spirited away to the moon, reunited with her friends, and find herself faced with saving Fairyland from a moon-Yeti with great and mysterious powers.

Originally published: United States: Feiwel and Friends, 2013. Includes bonus materials: Dear Catherynne Valente, Thank you for finishing these sentences. -- Questions for the illustrator Ana Juan. -- A sneak peek of "The boy who lost fairyland."