The students in Mrs. Green's class are excited to hear they will be having a substitute teacher, but their plans for partying and having fun all day change when they see who the sub is and what he has planned for the day.
The boring town of Dementedyville is livened up by a mysterious stuffed animal called Zombiekins that turns things upside down when exposed to moonlight.
A.J.'s mom gets a job, which means he has to spend his afternoons at After School Kids Kare--ASKK--where the program's director, Mr. Tony, is obsessed with getting into "The Guinness Book of World Records," for making the world's largest pizza.