George and Harold are captured and nearly turned into zombies, but are able to escape after Professor Poopypants mentions the planet Uranus, causing the boys to laugh and damage the Turbo Toilet 2000's computer, restoring the children back to normal. Captain Underpants tries to stop the villain, but due to having no actual superpowers, is effortlessly defeated and thrown into the toilet. Krupp but to stop Professor Poopypants, the boys had no choice but to snap Krupp into Captain Underpants once again. Professor Poopypants tries to take over the town with a giant version of the Turbo Toilet 2000, fueled by the school cafeteria's rotten leftovers left out by Edith and uses Melvin's brain to turn the children into glum, humorless zombies. Krupp finally separates the boys, which causes their plan to fail due to Professor Poopypants's reign of terror. As it starts to rain, Captain Underpants is back into an angry Krupp. Mr Krupp is snapped into Captain Underpants back and forth as the boys would try to keep track of him due to the shenanigans taking place. For the third step, Captain Underpants sets up a funfair at the schoolyard, However, Harold and George have to keep watch of Captain Underpants as most of the games involve water. As the second step, they open the art room. As the first step of their plan, George and Harold made Captain Underpants conduct the 1812 Overture, with whoopee cushions to reboot the school. Professor Poopypants teams up with Melvin (who is secretly his assistant) to take over the world after scanning his brain in his evil lair.Ĭaptain Underpants, George and Harold have a plan to make Jerome Horwitz Elementary School fun again. He recruits Melvin to help him, as he discovers (after reading a comic book George and Harold made featuring characters resembling them) that Melvin's brain makes him incapable of laughing or having fun. Krupp) hires him to be the new science teacher, but George and Harold are suspicious of him due to his violent and short-tempered attitude, as well as his resume's content.Īs it turns out, Poopypants is seeking to get rid of laughter altogether, resenting the people who have made fun of his name for years. (Nick Kroll), or as he calls himself, Professor P (who is pretending to be a nice school teacher). Just when George and Harold believe that their troubles have ended, Jerome Horwitz Elementary School is visited by an odd, German-accented scientist named Professor Pee-Pee Diarrheastein Poopypants, Esq. His sudden personality change even manages to attract the attention (and affection) of the school's shy lunch lady, Edith (Kristen Schaal). Krupp under the pretense of a "secret identity," to which Captain Underpants agrees. Krupp will continue trying to separate them, they decide to settle with Captain Underpants but insist that he be dressed up as Mr. Krupp by splashing water on him and can turn him back into Captain Underpants by snapping their fingers. To prevent these issues, the boys take him to their treehouse, where they discover that they can turn Captain Underpants back into Mr. The boys soon learn the severity of their actions when "Captain Underpants" begins causing problems around Piqua. Krupp bears an odd resemblance to Captain Underpants without his toupee and command him to be Captain Underpants. Krupp with a 3D Hypno Ring he received out of a cereal box. Krupp excitedly prepares to annihilate their friendship by putting them in separate classes. Finally having solid proof of the boys' antics, Mr. George and Harold's pranks come to an apparent end after they're caught tampering with a toilet invention, the Turbo Toilet 2000, made by the school's intelligent and local snitch and intellectual, Melvin Sneedly (Jordan Peele), on video. They distribute these to their schoolmates through a comic company called Treehouse Comix Inc., located in their treehouse. The duo also create comic books about an imaginary superhero named Captain Underpants (also voiced by Ed Helms), who fights crime in a pair of underwear and a cape. Benjamin "Benny" Krupp (Ed Helms), putting the two at odds with him. They excessively pull numerous pranks on the cruel teachers, many of which are directed at their bitter principal, Mr. Two fourth-grade friends and next-door neighbors named George Beard (Kevin Hart) and Harold Hutchins (Thomas Middleditch) are the pranksters at their school, Jerome Horwitz Elementary School in the city of Piqua, Ohio.