Captain Underpants 4: Captain Underpants and the Perilous Plot of Professor Poopypants / Dav Pilkey (Full Color Edition)

When George and Harold drive their science teacher to quit, Mr. Krupp hires a brilliant inventor whose name makes the whole class laugh. Professor Poopypants retaliates by ordering everyone in town to take a ridiculous new name. The boys need Captain Underpants to stop a scientist who can change the size of almost anything.

Written and illustrated by Dav Pilkey
Publisher: Scholastic, 2016
Edition: Full color
Language: English
Recommended ages: 7–10