To save the Undervale, Katherine must recall her first visit to the hotel, when a living Nathan offered her a place to call home amid marital struggles.

Nathan faces the horrors of politics as Esther runs his campaign for Ghost Mayor. A multi-limbed concierge lends Katherine a hand — much to Ben's dismay.

Gunslinging ghosthunter Dante Crowe checks in, dragging the family into a fight against world-ending omens. Abaddon answers the call of the wild.

After an astral projection mishap, Katherine and Shayna must help Esther find her body. Nathan takes Ben and Abaddon to a mermaid-infested lake.

Nathan discovers something to "live" for on a once-in-a-generation night when ghosts can roam free. Katherine stays in with an almost angelic Abaddon.

While Katherine and the kids reluctantly support a needy witch, Nathan struggles to open up about his afterlife and Abaddon tackles fiendish food prep.

Katherine braces for an unwelcome surprise as Ben throws a hauntingly awkward dinner party for Annabelle. Esther and Abaddon's friendship is tested.

With business picking up at the Undervale, Katherine is hiring for help. But can the perfect candidate survive the hotel's frightful working conditions?