One foggy night, the Man in the Moon has a startling thought - when the moon is less than full and bright, who will keep children safe at night? He needs a backup plan! Or a backup Guardian, as it were. His keen eye falls upon a sleepy little fellow living on a sleepy little island who is a sweet-dreamer extraordinaire. Since good dreams always trump bad ones, this means Pitch, the Nightmare King, will be further thwarted in his nefarious quest to terrorize children. Indeed, Sanderson Mansnoozie seems the perfect choice. But there are two problems. Firstly, given that Sandy has never had a bad dream, how can MiM convince him how important this new role is to the happy-being of children everywhere? And secondly, how can MiM keep this snoozy ally awake long enough to help?