The kids in room 207 don't know how lucky they are to have a nice teacher like Miss Nelson - until their misbehavior causes her disappearance, and they get Miss Viola Swamp for a substitute.
"Just as good as I remembered."
When the kids in room 207 find out that their teacher, Miss Nelson, will be away for a few days, they prepare to act up - despite the likely appearance of Miss Viola Swamp, the meanest substitute in the whole world.
Everyone at the Horace B. Smedley School is down in the dumps - until the arrival of the notorious Viola Swamp, who takes it upon herself to whip the football team into shape for the big Thanksgiving Day game.
Miss Nelson is the nicest teacher in the school. She never yells and she gives the easiest assignments. The kids in Room 207 take advantage of her good nature until she disappears, and they are faced with a challenging substitute.