It's Halloween and Mouse is excited about costumes, trick-or-treating, and most of all, what promises to be Cat's most amazing "Halloween Spooktacular" ever! But before the show can go on, Cat's robotic ghosts get loose and go flying around the neighborhood. Can Mouse and his friends go on a robo-ghost-roundup without spooking themselves, or worse, poor Moose, who finds Halloween the scariest day of the year? A high-flying adventure ensues, and despite a few mistakes, a twisty maze and one crash landing, finds a surprise ghost appearing up to save the day.