A skateboarding principal offers unusual incentives to his students to motivate them to learn more. Principal Klutz was hanging upside down from the school flagpole! He kissed a pig on the lips! He painted his bald head orange! And now he wants to bungee-jump off the roof of the school, dressed like Santa Claus! In fact, all the grown-ups at A.J.'s school seem to have something wrong with them. What's going on here? What are A.J. and the kids in his...

Owen and his friends decide that spying on the school principal at his own house will be a fun challenge.

The Notebook of Doom is missing and Alexander and his fellow-monster hunters, Rip and Nikki, are convinced that the boss-monster has it; but is that monster the mysterious Principal Vanderpants, who is certainly behaving oddly, or someone else--and they need to figure that out quickly because a mistake could have deadly consequences for Stermont Elementary.