Linda is a good witch who must stop her evil witch sisters from casting a spell on innocent pets.

Will is a quiet and gentle ghost, so when three bully ghosts set out to scare the people at Hill House, he and his other monster friends come up with a plan to stop them.

When the Moon is full Frankenstein Elementary is disrupted by Harriet the werewolf and her gang of were-bullies, and tonight they have a new target, a mummy (who is actually a human boy wrapped in toilet paper)--so Brian the zombie and his monster friends come up with a plan to protect the human boy and defeat the bullies.

Linda is a good witch, who always tries to undo the hexes that her sisters, Agnes and Griselda, create--but to defeat the malevolent smoke that they have cooked up this time, and teach her sisters a lesson, she will need the help of her monster friends, Brian the zombie, Mina the vampire, and Will the ghost.