Michelle Hathaway and her two daughters, Taylor and Frankie, move to New Orleans and discover that their new house is already occupied by a ghost family comprised of dad, Ray Preston, and his sons Miles and Louie.

As the newest member of the gymnastics team, Taylor is worried to find out she is responsible for hosting a team sleepover but Miles promises he and Louie will be on their best behavior. Unfortunately, Frankie and Louie team up to scare Taylor and her friends out of the house.

Taylor plans to win the science fair with Miles' help, but her mom forbids using ghost shortcuts, putting Taylor in a difficult situation with her teammates.

An argument between Ray and Michelle causes them to each think they're the better parent so they decide to switch roles. Lo and behold, Michelle is unable to wrangle the boys and Ray is completely thrown by the intricacies of girl social antics.

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.

Taylor is asked to a society ball by a seemingly sweet kid but when he turns out to not be the best partner, Ray comes to her rescue.

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.

It’s Taylor’s birthday and Miles is excited about getting his “new” sister a special gift – a ghost dog. When the dog turns out to be a less than the perfect pet, Miles tries to cover it up but gets caught.

Frankie fakes an injury to avoid a play that Michelle is directing at her school.

Louie gets mad when Frankie writes an essay for a prestigious private school that says he is a horrible ghost and he tries to sabotage the interview for the school. Meanwhile Taylor wants Miles to start to respect boundaries.

Taylor hosts a Halloween party and the Prestons help her by performing some ghostly tricks. However, Louie takes things too far when he gets haunting assistance from a very powerful ghost.

Taylor and Frankie inadvertently find out that their mother is dating their school's principal, so they plot to ruin their next night out with help from Miles, who breaks his current vow to not scare anyone.

A new cookie jar is sought by Frankie and Miles, because they need to replace the one they broke.

Ray and Louie swap bodies by mistake as they embark on a camping trip. Before long, Louie's in over his head, while Ray attempts to outfox a clever babysitter.

Frankie jeopardizes her friendship with Louie when she seeks help for a school project from Miles instead of him.

The kids try to retrieve Michelle's recipe book from the underhanded operators of a rival bakery.

Frankie puts a spell on Miles and makes him a bad ghost by mistake, so she needs to correct things quickly before Miles causes trouble during Taylor's talent show.

Louie and Frankie go too far with their latest prank, so Michelle and Ray separate them, but soon the adults realize that may not be the best idea.

Taylor gets too busy to spend a special day with Frankie, so Frankie devises a scheme involving a beloved teen heartthrob.

Ray's conservative father visits, and Ray struggles to tell him about his family's unconventional living arrangement with the Hathaways.

Louie lies about his dad's profession during career day at school, because he's disappointed that Ray's no longer a frightening ghost.

Miles' pal may have to move in order to escape a ghost allegedly haunting his family's business, so Miles and Taylor set out to prove that the place is free from paranormal activity.

Frankie disguises herself as a ghost boy to attend one of Louie's club meetings, but problems arise when the other members invite her to join the club.

Louie prepares for a duel against his school's top ghost after Ray builds up his confidence.

Taylor seeks help from Louie for her report on Vikings, but he summons a destructive ghost Viking instead of a famous one.

Frankie seeks revenge on Louie after he pranks her, so she crafts a Louie voodoo doll. Before long, Louie retaliates by making a Frankie voodoo doll.

Taylor takes a new gymnastics teammate, Meadow, under her wing. When Meadow has a tough time performing, Taylor goes to extreme measures to help her new friend. Miles and Frankie use each other to compete in a spelling bee.

Frankie is pranked by her rival, so she wants Louie to assist her with a sly revenge plan. Elsewhere, Taylor's small get-together at the bakery after closing time turns into an out-of-control party.

Louie Preston turns Frankie Hathaway into a half half ghost when something big comes up. Meanwhile, Taylor Hathaway, Michelle Hathaway, Miles Preston and Ray Preston compete against each other.

Taylor develops a crush on a boy, Scott Tomlinson, at school, but he doesn't feel the same way about her, so Taylor plans a way for her crush to notice her. Meanwhile, Frankie and Meadow MacIntosh seek revenge when they believe Scott ignores Taylor's affections for him.

Miles acts selfishly, jeopardizing Taylor's new friendship with Meadow; Louie and Frankie move to the tree house to live by their own rules.

Frankie tries to sabotage Taylor's study date with Scott by driving Taylor mindly insane.

Louie accidentally breaks Miles' telescope.

Louie gets an opportunity to show off his rap skills at a school contest and invites Miles to sing with him.

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. However, saving the day gets complicated when super-powered trick-or-treating, sibling jealousy and teen romance get in the way.

The crossover starts on The Thundermans S02E05 Haunted Thundermans Part 1 (I).

Taylor accidentally hits Meadow in the head while using Madame LaBeuf's staff. when Louie tries to scare off Meadow while earn his ghost scouting badges. Meanwhile, Frankie tries to help Miles cope with Mirabelle leaving for boarding school.

Frankie's new keyboard is destroyed in the middle of the night, leaving her to become a sleuth in determining who the culprit behind the act could be.

Taylor and Meadow let the inchworm get stolen, and they ask for Miles' help.

After being blamed for Louie's mess, Frankie is sent to charm school.

While in a fight with Scott, Taylor meets an intriguing new boy who happens to be a ghost; Miles helps Taylor decide who she wants as a friend.

After getting to know Miles, Meadow develops a crush on him; Taylor goes to great lengths to protect a secret.

Frankie and Louie plan to sell a valuable doll to a collector, but they run into some unexpected trouble at the toy store.

Frankie is suspicious of one of Louie's classmates when she asks Louie to teach her how to be a better ghost.

Michelle gets the bakery included on a tour of haunted restaurants, and Louie has to pull off the haunt.

Taylor wants to give Meadow a surprise party, but it accidentally gets complicated when Miles throws a wrench into the plan.

After failing the test to become a level two ghost, Louie runs away from home and ends up in a dangerous part of Ghost World.

When the ghost council finds out the Prestons have been living alongside humans, the council forces them to make a decision between haunting the Hathaways and leaving home forever.