George and Harold aren't bad kids. They just like to 'liven things up' for everybody. Unfortunately- their thoughtful jokes sometimes get them into a ton of trouble. And when Professor Pippy P Poopypants becomes their new science teacher ... well- George and Harold almost cause the entire planet to be taken over by a maniacal- mad-scientist guy in a giant robot suit! Who will stop the perilous plot of Poopypants?!!? This looks like a job for Captain Underpants!