It’s Halloween in Brewster, and everyone is excited-except for Heidi Heckelbeck. Heidi hates seeing people dress up as witches, as if they know what life as a witch is truly like. When Melanie Maplethorpe decides to be a witch for Halloween, Heidi decides to dress up as Melanie to get back at her. But Heidi takes her Melanie act a little too far, saying and doing things that upset her friends. Will they ever forgive her?