Magic Molly Miggins and her family are spending a weekend on the coast at the house of Granny Whitewand's sister, Willow. Molly is intrigued by the legend of Cranberry Cottage, a house so creepy that none of the villagers will go anywhere near it. The legend says that hundreds of years ago, Cranberry Cottage was cursed by the Black Witch, Belladonna Blackheart who still lives there in the form of a Wraith Witch. Molly, despite constant warnings, decides to get a closer look. When her arch enemy, Henrietta Havelots turns up, things get more than a little serious. Molly discovers that Belladonna is planning to open up the dark, mysterious, Void so that the evil witch, Morgana can return to the world. Can Molly remove the curse and put a stop to Belladonna's plans, or will the Wraith Witch succeed in her quest to release Morgana and make Molly and Henrietta her slaves.