Flint is furiously trying to finish the illustrations on his first comic book before he loses his eyesight due to his damaged cornea. His superhero character is called Squint after the nickname his classmates derisively give him for his poor vision. My name is Flint, but everyone in middle school calls me Squint because I'm losing my vision. I used to play football, but not anymore. I haven’t had a friend in a long time. Thankfully, real friends...

When George and Harold hypnotize their principal into thinking that he is the superhero Captain Underpants, he leads them to the lair of the nefarious Dr. Diaper, where they must defeat his evil robot henchmen.