Wendell, Floyd, and Mona can't wait to go trick-or-treating. But weird things start happening before they even set out---from costume snafus and sneaky pranks to gross-out candies. Plus, the trio has to contend with ghoulish leona Fleebish and her pack of cackling cronies. But before the night is over, some supernatural surprises and a little Halloween magic will treat the three friends to a triumphant adventure.