A young boy named Bobby thinks he has the worst teacher. She's loud, she yells, and if you throw paper airplanes, she won't allow you to enjoy recess. She's a monster! Luckily, on weekends Bobby can go to his favorite spot in the park to play. But then, one day, he finds his teacher there! And over the course of that one day, Bobby learns that monsters are not necessarily as monstrous as they seem.