We see a shadowy older Egon chased by ghosts to a dilapidated farmhouse where he tries to capture the powerful spirit but fails and shuffles off this mortal coil in the process. His estranged daughter Callie (Carrie Coon) and her two kids Phoebe (McKenna Grace) and Trevor (Finn Wolfhard) are willed the dilapidated farm and all the debt that comes with it. Meanwhile, ghosts are once again reappearing in the world of the living and after discovering an old ambulance with crazy alterations (including a gunner seat and functioning proton pack), Pheobe, her new pal “Podcast”, and Trevor head out to get control of the situation. Throw in geology teacher Chad (Paul Rudd) to feed info to Phoebe info about the disturbances and you’re off on an adventure.