To relieve boredom while awaiting the grande opening of Laserland, teens Leo and Jamie decide to play ""welcome wagon"" by taunting the new neighbor, 9-year-old Mary Anne. But Mary Anne's new, ghostly ""imaginary friend"" turns the table on the bullies, escalating when Leo snatches the girl's beloved kitten, Boo.

When brothers Richard and Stephen improperly dispose of the toxic waste from their failed Science Fair Project in a nearby bog, it comes back to haunt them in the form of a Bog Blob.

Randall, who loves to invent destructive mechanical gadgets, gets his comeuppance as his appliances suddenly turn on him.

Vincent tells Tom a ghost story about a Mountain Spirit In order to spook out his main competitor before the big ski race, but the spirit really exists and comes to torment Vincent for his deceptive ways.

Derek and Rob, trying to steal from Rodman's Department Store, get locked in the store overnight as the mannequins come to life.

Julia, obsessed with the idea of being more beautiful, puts on a miracle cream that fulfills her wish but causes her to attract the unwanted attention of all sorts of creatures.

Aspiring artist Ralph finds a magic pencil that allows him to put life into his drawings and take revenge on the bullies who have been harassing him, but revenge isn't as sweet as he thought.

Book-hater Greg is forced by a mysterious librarian to endlessly relive a bunch of classic stories.

Erin, who has a reputation for making up stories, discovers that no one will believe her when she discovers that the people proposing a new business deal to her mother are actually aliens planning to make a meal out of the townsfolk.

For Christmas, Gary recieves a phone line for his bedroom with the proviso that he doesn't ""abuse the privilege."" Naturally, Gary immediately begins making prank calls, but he soon finds the tables turned when one of the people he called begins stalking him via telephone. Gary pays the caller a visit and discovers Mrs. Emma Needham, an old lady who soon proves that she's not as nice she initially appeared...

After Evan gets away with telling his teacher the ultimate lie that a monster ate his homework, he gets a visit from some monsters inquiring after the missing homework, and about having him for dinner.

Junior High School friends Stephanie and Jan hate rules. They will stop at nothing to get out of their frog dissection class in Biology, including skip school. The girls end up in the Everglades where they meet John Kirby, a Professor of Zoological Biology.