Taylor assures her gymnastics team she can win the top cash prize at the science fair so they can buy new uniforms, assuming Miles will help with his ghost powers. However, Michelle forbids Taylor from using Miles' short cuts, leaving Taylor to create the project herself. Michelle gets into bigger trouble when she tries to improve Taylor’s project and breaks it, and must rely on Louie’s erratic ghost powers to fix the problem.
Frankie is not exactly the best player on her school volleyball team, so Ray decides to give her a “boost” using his ghost powers. It’s a huge success, but at the next game when Frankie is left to rely on Louie’s erratic abilities, she needs to find the confidence from inside herself and step up on her own.
The Hathaway/Preston Yard Sale is the first official “family” activity and everyone is on board until Louie fumbles his attempt at possessing one of the stuffed animals, landing himself in Taylor’s favorite nurse doll. When the doll, with Louie inside, gets sold to a doll collector the kids must all work together to get him back home safely.
Louie takes Frankie to Ghost World on her birthday; Frankie is put into ghost jail.
After a supervillain 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 Thundermans travel to New Orleans to help the Hathaways and the Prestons when a super villain escapes Ghost World on Halloween.