Liv and Maddie - Season 4 (2016)

Liv and Ruby get a part on Sing It Louder, It goes horribly wrong. Ruby cannot handle the pressure.

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.

When Maddie starts to miss Christmas in Wisconsin, Liv tries to cheer her up.

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

Liv and her fellow female co-stars of "Sing It Louder!!" attempt to break a stereotype by organizing a woodblock derby race against the boys. Meanwhile, Maddie and Willow take part in a challenge at their local restaurant.

Joey's popularity at school is threatened when an old nemesis from Wisconsin returns and Maddie feels the need to keep a close eye on Parker's new friend.

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.

Maddie and Willow help a homeless acquaintance; Karen gets discovered by a modeling agent; Joey and Parker attempt to sneak into a movie.

Joey's idol invites him to perform stand-up at the hottest comedy club; Liv and Maddie help Parker with his science experiment.

Liv gets vocal nodes and has to avoid singing until she gets surgery. Unfortunately she has to sing for a live event "Sing it Live". Parker and Joey however, come up with a disturbing invention.

After Liv undergoes vocal surgery, she is unsure if she'll be able to sing again, so Karen and Maddie call in reinforcements to help; Parker and Val are surprised by their competition in the Mars Madness finals.

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