Joey and Parker have finally reached the point of no escape and have to clean their inexplicable filthy room. When they try to trick Liv and Maddie into cleaning it for them, the girls fight back with an even better ruse.

Liv, Maddie and their friends confront a fellow schoolmate who has been giving them numeric ratings based on looks.

Liv meddles with Diggie's "meet-a-versary" gift for Maddie and Parker concocts a new face cream for Karen.

During a neighborly feud with the Dippledorfs, Liv rekindles an old friendship with Holden Dippledorf. Meanwhile, Joey becomes fascinated with a new member he meets at his weekly Intergalactic Council meeting.

Diggie returns from Tundrabania, but he and Maddie have trouble reconnecting. Joey tries to solidify his relationship with Diggie through the Tundrabanian sport of Flugelball. Meanwhile, Parker attempts to teach his new unlikely friend Dump Truck how to ride a bike.

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.

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.

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.

"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 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.

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.

Liv lands a small part on the hit show "Linda and Heather," but her role turns out to be bigger than she could have ever imagined. Meanwhile, Joey has to deal with his relationship woes.

Liv's new show is in danger of being canceled because they can't find the right cast; Liv helps by searching for the perfect star; Parker plans to take Joey and his new Falcon persona down by having Joey test-drive a dangerous invention.