When Sam and Jay leave the ghosts home alone for the weekend in an attempt to have a romantic getaway, shocking revelations are made about two of Woodstone's beloved spirits.
Pete's widow, Carol, shows up at Woodstone Mansion during Sam and Jay's Halloween party, where they're trying to impress some cool friends; the ghosts hope to bring Flower back with a seance.
Pete gets a visit from his living wife only to discover she's hiding a secret from him; Sasappis gets angry when Thorfinn binge-watches their favorite show without him; Trevor learns he may have a daughter.
When Jay's sister Bela returns to Woodstone Mansion for a Christmas visit and brings a male friend, Samantha makes it her mission to spark a holiday romance between them.
While Sam and Jay prepare to host their first wedding, the contractor finds a hidden vault. Jay hopes to "Scrooge McDuck" into gold coins, Trevor tells the other ghosts about Al Capone's vault.
Sam and Jay's assistant Freddie purchases ghost-hunting equipment when he becomes convinced by suspicious activity that the B&B is haunted; Freddie selling his car could mean the end of things between Sasappis and Jessica.