It's Halloween in Elliot's Park and the squirrels are all in costume, ready for some trick-or-treating fun. But when Elliot, Chip, Twitch, and the rest of the gang think they see a ghost in Camp Canyon, there's a frightful mystery to be solved. Can Elliot and his friends figure out who is haunting the park before something scary happens and still have time to trick-or-treat? Meet Elliot and all his friends! Elliot is a very smart squirrel who loves to solve any problem he finds. His best friend Chip is a hilarious klutz. He's gotten into some interesting scrapes and trouble, including a celebrated encounter with the monkey bars in which one of his two abnormally large front teeth was broken. Crash is the only flying squirrel in the park. She's just visiting from England, but it doesn't look like she's leaving any time soon! Then there's Twitch, Elliot's sister. She's good at finding things, especially her favorite sugary drink -- soda pop.