Dove Cameron | Liv and Maddie | Season 4

"Sorta Sisters-a-Rooney"

As the Rooney family gets settled living their new lives in California, Aunt Dena's daughter Ruby comes home from a summer safari trip with Grandma Janice and meets the visiting Rooney family. She starts bonding with her twin cousins, whom she thinks of as "sorta sisters". With Ruby and the twins sharing a bedroom, Liv becomes bothered by a velvet portrait of Diggie that Maddie has hung on the wall and wants Ruby to destroy it. Upon hearing from Maddie how much Diggie means to her, Ruby finds herself unable to harm the portrait but winds up accidentally ruining Liv and Maddie's "sisters by chance" artwork. Maddie easily patches it up and tells Ruby to keep the incident a secret. The twins eventually find out each other's ploys because Ruby becomes distressed over keeping any secrets from her two cousins. Meanwhile, Joey and Parker begin attending the Boyle and Oppenheimer Official Magnet School—BOOMS. Joey fears not fitting in from his first day and takes on the persona of "Falcon", suggested by Ruby. Parker struggles to fit in after his classmates give him a hard time, but Joey, as Falcon, tells the students to give Parker a chance and suddenly becomes the "cool" one at the school.

"Linda & Heather-a-Rooney"

After Voltage, it has been difficult for Liv to land an acting role, but her manager Becky secures her a guest spot on Linda and Heather. That makes Parker ecstatic, so he attends the show's set with Liv and gets to meet the two lead stars. When Liv's character on the show is left to decide something concerning Linda and Heather, the two leads get into an argument and ultimately quit. With the show's future on the line, Becky comes up with a plan to save it, involving both Liv and Parker; the plan works as the two leads make up. As the publicity of Liv's saving Linda and Heather improves her image, Becky delivers news that Liv will be reprising her role from Sing It Loud! in an update called Sing It Louder!!. Meanwhile, Joey and Willow have broken up, but Karen hears two different stories about how that happened, leading her to get the two together to set the details straight. Also, in attempting to teach her cousin the pain of losing, Maddie becomes frustrated over Ruby's constantly winning against her in various games.

"Scare-a-Rooney"

Joey and Parker learn the hard way when the kids at BOOMS don't celebrate Halloween and decide to prank the kids. After Aunt Dena leaves for a convention, Liv and Ruby leave for the Demon’s Dungeon, but Liv bumps into a former actor she worked with on Voltage, and she discovers that her decision to quit the show ruined his career.

"Sing It Louder!!-a-Rooney"

Gemma has become the director of Sing It Louder!! but tells Liv the show will not get off the ground unless the crew can find an actress to play the lead character, Sasha. Liv discovers that Ruby is potentially good for the part after hearing her cousin rehearse lines, and she suggests Ruby audition for it. The pressure mounts when Gemma is expecting Ruby to nail her audition, after all the other applicants for the role have failed. This makes Ruby anxious and she backs out, but Liv realizes Ruby is more worried about disappointing her than for the show itself. After Liv assures Ruby that she need not worry about disappointing her, Ruby tries out and lands the role of Sasha. Meanwhile, Maddie panics after spilling liquids on her laptop, having finished an important school paper on it, while Parker seeks proper credit for his work at BOOMS with Joey's popularity getting in the way.

"Slumber Party-a-Rooney"

Joey's reputation as Falcon may go downhill when he bumps into the old cool kid, Skeeter. Meanwhile, Liv decides to have a slumber party so Ruby and Priya would become friends when something goes wrong on set. Parker returns to his old ways when he builds Parker Tunnels in Aunt Dena's.

"Cali Christmas-a-Rooney"

It's Christmas in California soon and Wisconsin's Christmas is lacking in Maddie so Liv does everything to recreate their old Christmas, even inviting Diggie. Joey participates in a Santa Claus contest hosted by Johnny Nimbus.

"Standup-a-Rooney"

Parker is unsure if he asked Val to be his science partner for a chemistry competition or to a dance that are on the same night. Joey tries out stand-up comedy and fails at first but succeeds his second time with Maddie's help. Karen learns that Aunt Dena took Liv to get her ears pierced while she was younger and their friendship is strained.

"Roll Model-a-Rooney"

A classic toy car race scene from Sing It Loud! is planned to be recreated in Sing It Louder!!, and Liv tries to convince Zach that the girls should win the race this time and break the stereotype that girls can't like cars. Zach agrees that whoever wins the competition in real life can win it in the episode of Sing It Louder!! When Zach gives the girls a high-heeled shoe with wheels on it as a car, Liv explains to Ruby and Priya that they should not be afraid to do whatever they like. They refuse to accept the shoe car and, with the help of Liv, build their own car. The girls win the competition and teach everyone a lesson about unfair stereotypes. Meanwhile, Maddie and Willow are determined to break a gender barrier of their own when they compete to become the first women to successfully eat spicy peppers at a restaurant.

"Falcon-a-Rooney"

Skeeter brings Artie to California to reveal the secrets from Joey's embarrassing past in high school after Skeeter's previous failed attempt, but Joey owns up to it and comes to school as himself instead of Falcon next day, and the other students at BOOMS just end up liking him even more for that.

"Ex-a-Rooney"

Josh returns and has been making action movies with Joey who, in turn, has been trying to keep Josh and Maddie apart due to Josh allegedly not dealing with the break-up well, but they run into each other again when Maddie returns home early from a canceled practice. Maddie and Josh are able to rekindle their friendship, but Joey feels awkward by it and asks Liv to pretend to be Maddie in order to stop Maddie and Josh from spending time together. In the process, Joey tells Liv to stop playing with Josh's emotions again, but Maddie catches Liv pretending to be her and forces her to go to a game with her. Meanwhile, Parker and Val compete to be one of the first humans on Mars in a competition called Mars Madness at BOOMS, but Parker accidentally sets the temperature to 42 degrees Celsius instead of 24, which results in Val's growth serum evaporating and turning Parker's plant into a giant, and they end up having to kill it together.

"Tiny House-a-Rooney"

Karen is giving a chance to do modeling but, Liv thinks the offer is a scam. Meanwhile, Maddie and Willow learn that a guitarist friend is homeless and, with Val's help, decide to build a tiny house for him.

"Big Break-a-Rooney"

Parker does a series of tests on the twins to see who's smarter in IQ. Meanwhile, Joey tries to get his stand-up comedy off the ground.

"Sing It Live!!!-a-Rooney"

When Gemma learns that her special guest for Sing it Live!!!, is stuck in New York, Liv has to sing in fear of losing her singing voice. After she sings her solo, she tells Maddie that she needs to go to the hospital immediately and the episode ends as the screen says to be continued.

"Voice-a-Rooney"

A few weeks after the events of Sing it Live-a-Rooney, Liv is given a chance to be on Broadway but is not sure if she wants to know if she can sing. Maddie brings back The Dream to help. Meanwhile, Parker and Val are in the finals for Mars Madness, but find out their competition might lead victory down a slope.

"End-a-Rooney"

The Rooney family plans to spend the summer together before they all have to go their separate ways. However, Joey receives the opportunity to tour with a famous stand-up comedian. The next week, Maddie gets the grant to build tiny houses, but has to fly to New Orleans the next day. Liv's manager Becky reveals that she has been cast in a broadway musical set to take place over the summer, and Parker also has to leave early for the bio-dome, which has been moved to Bolivia. The kids tearfully break the news to Karen, who admits that she is proud of her children and encourages them to follow their dreams. The Rooneys elect to spend one final "night of Rooney" together, and they gather around a campfire with their friends and share secrets. The episode ends with Liv singing an acoustic rendition of the show's theme song (with Diggie playing along on the guitar) and sharing a tearful embrace with her sister. Meanwhile, Joey reveals to Dump Truck that the Rooneys have been followed around by a camera crew for the past four years to film a reality series entitled "Bits & Pieces" that airs exclusively in Luxembourg, which has served as the framing device for the show.