Brigita is hosting a costume party at her castle for her friends Adrian and Jenny. Brigita starts telling a spooky story about the very castle they are in. She says that there is a secret room somewhere inside. After hearing some spooky sounds, everyone goes to the library to find out who or what was making them. First, Brigita found a secret passageway by tilting one of the books. Second, after Jett saves Brigita's cat, Lucy, he ends up in a secret room that is part of the story. Unfortunately, he is trapped inside and cannot get out. To make matters worse, the walls are too thin for him to send a distress call to base (Jimbo). Can Jett escape from the secret room?
