When Miss Nelson is away, the kids in room 207 are up to no good. They can fool the principal, but not Viola Swamp. Now, the kids can't wait for Miss Nelson's return.
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.