Complex sentence: The story begins with the school troublemakers, George Beard and Harold Hutchins, making a comic featuring there superhero they created, Captain Underpants later they'd playing a series of practical jokes that cause their school to lose a football game.
Split into simpler sentences: The story begins with the school troublemakers, George Beard and Harold Hutchins, making a comic featuring there superhero they created, Captain Underpants. Soon in the book George and Harold played a series of practical jokes that cause their school to automatically lose a football game.