As Halloweentown prepares to celebrate its 1,000th anniversary, Marnie Piper and her brother Dylan return to Witch University, where trouble is in session from the Sinister Sisters and from someone who's plotting to use Marnie's powers for evil. Sara Paxton, Judith Hoag, Lucas Grabeel, Joey Zimmerman, Kristy Wu, Keone Young, Millicent Martin Added on Disney 2020-11-30. Youtube Trailer