With Ray's Occult overrun by Halloween shoppers, Charlotte escapes the city with the Spengler women to celebrate at her home in Danvers. Recent events inspired her to explore riskier magic as the new Supreme of her family coven. Pushing herself into the realm between the world of the living and the dead, Charlotte has been searching for a recently lost loved one, hoping the thinning of the veil between these worlds on Samhain might point them back home.
When festive elements combine to open a portal, the girls' trip turns otherworldly, they find themselves lending help to heroes and facing villains like themselves, only different. Will Charlotte go too far in her pursuit of the unknown? What will this crossrip mean to the future of Spellman & Stantz and the Ghostbusters?