With spooky season kicking off in the city of Townsville, Buttercup has set her sights on winning the Townsville Gazette's contest for the best Halloween horror comic - and what better place to find inspiration than a big, old, possibly haunted hotel?

But even though it also has a cool hedge maze, there's one problem with spending Halloween at the Townsville Hotel - there's nowhere to trick-or-treat! And Bubbles and Blossom are determined to show off their costumes and get some candy - if only they can convince Buttercup that all work and no play will make her a dull Powerpuff Girl!

Of course, Townsville being Townsville, there's also no shortage of nefarious malefactors prowling around, just waiting for the chance to catch the girls off guard. Will their Halloween bickering keep the Petite Powerhouses from thwarting their villains? (Hey, stranger things have happened!)