"Return to Halloweentown" is a 2006 Disney Channel Original Movie and the fourth installment in the Halloweentown series. The film follows Marnie Piper, who is now a teenager and eager to embrace her witch heritage. She discovers that Halloweentown is in danger and must return to save it from a dark force threatening its magic. In Halloweentown, Marnie reunites with her family, including her grandmother, Aggie Cromwell, and her brother, Dylan. Together, they face challenges and uncover secrets about their family's past. The movie emphasizes themes of courage, friendship, and the importance of embracing one's identity.