A family of tiny people experiences a crisis when a baby is born during a snowstorm.

Grandpa Little disappeared many years ago. Everyone says he is probably dead...except Granny Little. But when Tom and Lucy, the littlest Littles of all, find a secret room filled with papers belonging to Grandpa Little, they think that maybe he's alive after all. If the Littles read his diary and study his maps, can they find Grandpa Little or will he be lost forever?

The Littles are in for big trouble when many messes around the house suggest that they have a terrible tiny kid on their hands.

"There are some pretty weird grown-ups living in Bailey City. But could the swimming teacher at Camp Lone Wolf really be a sea monster? The Bailey School kids are going to find out!"--Cover.

When George and Harold hypnotize their principal into thinking that he is the superhero Captain Underpants, he leads them to the lair of the nefarious Dr. Diaper, where they must defeat his evil robot henchmen.

"There are some pretty weird grown-ups living in Bailey City. But could the dentist who has extra-large muscles and talks of being champion of the world really be Hercules, the strongest man in the world? The Bailey School kids are going to find out!"--Cover.

Only Captain Underpants can stop the three evil space aliens who have invaded Jerome Horwitz Elementary School and turned everyone into lunchroom zombie nerds.