In the halls of Jerome Horwitz Elementary, two fourth-grade pranksters with boundless imaginations, George and Harold, face their greatest threat: the soul-crushing tyranny of their new principal, Mr. Krupp. Voiced by Kevin Hart and Thomas Middleditch, the mischievous best friends use their homemade comic books as an escape, chronicling the adventures of their superhero creation, Captain Underpants. Their world is turned upside down when the perpetually grumpy Ed Helms, as Principal Krupp, threatens to separate them forever. In a moment of desperate inspiration, the boys accidentally hypnotize Krupp into believing he is their fictional, wedgie-powered champion. Suddenly, their stern administrator is sprinting through the streets as the enthusiastic and obliviously heroic Captain Underpants, clad only in his briefs and a cape. This hilarious animated adventure follows the chaotic fun as George and Harold must manage their living comic book hero while a genuine threat emerges from a surprising source—a gloomy science teacher with a diabolical plot, voiced by Nick Kroll. Packed with laughter, friendship, and wildly inventive animation, this family film captures the joy of childhood creativity against all odds.