The last time we met them, George and Harold were being led to prison for the rest of their lives. Could anything be worse? Yes, being taken out of prison by a tyrannical time traveler named Pippy Poopypants! And so, we meet George and Harold in their carefree kindergarten years, when the worst they had to face was not some evil mad scientist or an alien lunch lady, but a sixth-grade bully named Kipper Krupp, the nephew of their clueless principal. Only George and Harold invented Captain Underpants in fourth grade... The clever kindergartners are all alone. Is their wit enough to defeat the bully?!!