After relating all of the horrible things the school custodian, Fester Smudge, is known to have done, a student whose locker won't open needs Mr. Smudge's help.
Mrs. Green has heard all kinds of horrible things about her new students and fears it will be a terrible year, only to be pleasantly surprised when they arrive looking like perfectly normal children.
A young boy, faced with the prospect of having to take a music class, thinks about all the terrible stories he has heard about the music teacher, Miss LaNote, and the ordeals she forces her students to endure.