Diaper, who plans to use the crystal to power his Laser-Matic 2000, which will blow up the Moon in twenty minutes, causing huge chunks to destroy every major city on Earth so that he can take over the planet. There, Captain Underpants is tied up while George and Harold hide and watch as Captain Underpants is introduced to the evil Dr. Before they can change their principal back, the trio witnesses two robots stealing a large crystal from a shop and Captain Underpants tries to stop them, resulting in his cape getting caught on the robot's van, dragging him (and the boys) to an old, abandoned warehouse. The police arrive and arrest the robbers, but before the cops can arrest Captain Underpants too, the boys whisk him away.
"Captain Underpants" eventually confronts two bank robbers at a bank, who fall into hysterics. Krupp (as Captain Underpants) jumps out the window to fight crime, causing the boys to grab some supplies such as fake dog feces and follow him. Krupp act in ridiculous ways, such as behaving like a chicken, a monkey, and then finally into the superhero from their comics, Captain Underpants. Krupp, and Harold replaces the video with one of his little sister's "Boomer the Purple Dragon" sing-along videos.Īfter reading some of their old comics, the two begin taking turns making Mr. The boys then use the ring to hypnotize Mr. In order to escape this labor, George orders a "3-D Hypno-Ring" from the Li'l Wiseguy Novelty Company, which they receive after 4 to 6 weeks of grueling labor. Krupp's house after school, and do extra homework. Krupp's car and mow his lawn, not smile or be disruptive at all during school time, spend lunch and recess cleaning his office, work on Mr. Krupp reveals that he had set up security cameras that filmed George and Harold preparing their pranks and recorded them on a videotape, which he threatens to release unless they obey him.
One day, they pull a series of practical jokes at the school's football game, from putting black pepper in the cheerleaders' pom-poms to filling the ball with helium, which causes the school to forfeit. When not causing mayhem at Jerome Horwitz Elementary School, they write and draw comics in George's treehouse featuring characters of their own creation, namely Captain Underpants, and sell copies of their comics on the school playground. In Piqua, Ohio, George Beard and Harold Hutchins are fourth-grade pranksters.