When the words "Werewolf Power" mysteriously appear on the classroom blackboard just days before Halloween, the entire school is instantly on edge. But the spooky pranks do not stop there. Terrifying screams and haunting sounds start echoing through the halls, especially near the art room. Amateur detectives Jill and Gwen, along with Jill's faithful dog Fletcher, know that something incredibly queer is going on. They decide to team up and track down the source of the ghostly noises. Is their school truly haunted, or is someone playing a massive Halloween trick? This is their spookiest case ever!