Professor Pippy P. Poopypants is the evil genius behind the Shrinky-Pig 2000, the Goosy-Grow 4000, the Gerbil Jogger 2000, and the dreaded Name Change-o-Chart 2000.

One day, Professor Poopypants got so angry at everyone making fun of his name that he hit rock bottom and decided to pull the rest of the planet with him. And he used his mad inventions to perform his perilous plot.

Will Captain Underpants save the planet?