"Why do grown-ups make such a fuss about tidiness and cleanliness, anyway? What's the worst that could happen? A couple of ants pass through? A lone little mouse pays a midnight call? No big deal, right? Right? Author Jason Carter Eaton and illustrator Mark Fearing are here to caution you that being a slob might in fact be a big deal--a really big deal"--Dust jacket flap.

Cami Kangaroo loves stuff! Rocks, shells, feathers, toys...she loves them all. She collects them, sorts them and builds with them. There's only one problem: her room is so messy that it's nearly impossible for her to find things! Will she ever be able to figure out how to be more organized?

The entire town of Up Yonder joins in to help their favorite teacher clean up her messy classroom.

"In this latest misadventure, Nate, the all-time record-holder for detentions, gets to see how the other half lives as he follows his best friend Francis's example and becomes a total neat freak; has Nate totally flipped out?"--