After a super-villain escapes Ghost World on Halloween, the Thundermans head to New Orleans to join forces with the Hathaways and the Prestons to defeat the ghoul.
The first Hathaway/Preston Yard Sale is smooth sailing until Louie fumbles his attempt to possess a stuffed animal, landing himself in Taylor's favorite nurse doll. The kids must all work together to get him back home safely.
Frankie's new keyboard is destroyed in the middle of the night, leaving Louie to become a sleuth in determining who the culprit behind the destruction could be.