It has been two years since the Cromwell/Piper family saved both Halloweentown and the mortal world from the evil Kalabar. During that time, Aggie Cromwell (Debbie Reynolds) has been developing her grandchildren's magical abilities. But when Marnie Piper (Kimberly J. Brown) falls for their new, mysterious neighbor Cal (Daniel Kountz), the family must return to Halloweentown, once more, to save the day (yet again).