Before he leaves for Australia, Diggie needs to tell Maddie how he feels. Meanwhile, Parker, Reggie and Evan swear they will remain on the couch until the new season of Linda and Heather is released.

After exciting opportunities arise for each of the Rooney children, their summer plans are thrown into jeopardy.

Liv tries to help her new co-star Josh feel more comfortable in Stevens Point while the rest of the school prepares for Cowbell Week, a Stevens Point tradition.

In the season three finale, Liv and Maddie get into a big disagreement while trying to figure out if they'll be together for the next four years or be going their separate ways.

While Joey and Maddie try to catch Diggie before he departs for Australia, Liv covers for Maddie at home. But when Diggie shows up at the Rooney house, chaos ensues, reminding Parker of his favorite soap opera drama. Meanwhile, Liv gets a call from her manager telling her she landed a coveted role in a new TV show "Voltage."

Casting is underway for Liv's co-star in "Voltage" and some familiar faces show up for the auditions. Meanwhile, Karen arranges a "cleansing ceremony" for Maddie to help her let go of her feelings for Diggie.

Joey invites three girls over to watch the "Lover's Comet;" Grandma Janice presents Liv with an award but something seems off.

Liv realizes that Voltage is moving their set to Los Angeles and she must pick to either move to California with the show or stay home and go to college with Maddie. Joey finally realizes that he likes Willow back and he needs to tell her this before she leaves to California for training camp.

Liv invites her “Voltage” director and crew over for the Rooney’s traditional Christmas Eve dinner but is forced to enlist Artie’s help to prepare the famed meal. Meanwhile, Maddie and Willow’s gift exchange takes a surprising turn.

Joey and Parker hold strong beliefs that the Voltage set is haunted; Josh finds an excuse to spend time with Maddie.

Maddie and Josh go on their first date. Liv and Holden try to help Parker pass his show choir class.

As the cast of "Sing it Live!!!” gets ready for a live televised show, a vocal injury threatens to ruin Liv's performance.

To prove to the skeptics that she is meant to star in “Space Werewolves,” Liv agrees to do all her own stunts, not realizing exactly how complicated they are. Maddie tears her ACL and needs surgery, therefore not being able to play in the championship or go to the Junior Olympics.

Maddie and Willow join in on the Senior Scare, in which high school seniors scare middle school students; Liv and Joey head to New York.

When Liv needs to learn French for an upcoming interview, her mom decides to immerse her in the language and culture. Meanwhile, Maddie is thinking about dating again.

"Voltage" is taking up all of Liv's time, but when The Dream is asked to reunite for a fundraiser, Liv is determined to make it happen. Meanwhile, Maddie tries to figure out where to go to college.

Liv, Maddie and the rest of the Rooney family are excited to start their new life in California. As the school year begins, the Rooney's cousin, Ruby, returns home from a summer trip. Excited to have "sort of" siblings, Ruby can't wait to finally be a sister but finds herself in the middle of a sister-fight between Liv and Maddie. Meanwhile, Joey and Parker attend their new Science and technology school and their experience is not what they expected.

Liv and Maddie try to plan their sweet 16 party but complications arise.

Maddie enlists Liv's help to build a giant Paulie Porcupine head for the Homecoming parade, but Joey and Parker accidentally destroy it while playing around with a stunt-prop from Liv's TV show, "Voltage."

Liv gets upset when an interview focuses on her appearance instead of her acting. She enlists her friend Kristen Bell to help her change the conversation. Meanwhile, Maddie must hunt down a lost library book or else she won't get her final grades.

When Parker gets bumped up a few grades, he starts attending high school with Liv, Maddie and Joey! The older siblings now have to deal with him being good at everything.

Liv takes Ruby to a spooky dinner and runs into an old acquaintance and Maddie comes face-to-face with the real-life spider-sprayer. Meanwhile, Parker and Joey must convince their classmates to celebrate Halloween.

Liv has a sleepover to help Ruby and her co-star Priya become better friends; Joey meets a new nemesis and Parker reveals a big surprise to Maddie.

Joey is nervous when he's invited to perform stand-up comedy at a local restaurant. Parker finds himself in a predicament.

When Maddie and Josh start hanging out again, Joey feels awkward by their rekindled friendship. Meanwhile, Parker and Val find themselves in a jam when competing for a coveted finalist spot in the Mars Madness competition.