Thresholds of the Grand Dream
by Alex Scott
Whenever the kids at Sonia Obata's new school fall asleep, they all go to a place called the Grand Dream, without a single adult to bother them. But when Sonia discovers something has tampered with her memories of this place, she realizes it's not the paradise it seems to be. She must search through the dream world for a way to shut the Grand Dream down before it destroys everyone's minds.