In Pip and Posy’s Spooktacular Party, Frankie decides to host a Halloween party at her flat, complete with a “best scarer” competition and a crown for whoever gets the most scares. The friends arrive in their spooky costumes—only to discover that Pip and Posy have both come dressed as witches and the two of them try to out-do one another and prove who is the witchiest-witch of all. But when a storm cuts the power and a mysterious figure is seen moving around the flat, the friends are fearful that there’s a real ghost at the party. Can Pip and Posy put their witchy rivalry to one side to uncover the mystery, save the party and give all their friends a Halloween to remember?