Season 3 ends with Austin and Ally's relationship hitting a road block when Austin's music label forces them to keep their relationship a secret. Meanwhile, Dez considers moving to Los Angeles to be closer to his girlfriend and to attend film school.

Ally's father decides to sell Sonic Boom, after Ally says she's too busy to work there.

Everyone gets locked in Sonic Boom overnight on Halloween. They pass the time by seeing who can tell the scariest ghost story.

Trish lands the lead role in a school play, but she drops out when she learns someone is making fun of her online.

Austin disappears just before his scheduled performance on "Video Countdown Live." It's soon discovered that Brooke is holding him captive until he writes a song for her.

Carrie threatens to tell her sister Piper, who is going to the prom with Austin, that he would rather attend the event with Ally. Meanwhile, Piper grows suspicious of Austin's relationship with Ally.

Ally questions her relationship with Gavin after he fails to ask her to the prom. Meanwhile, Austin doubts his decision to ask Piper to the prom.

Dez, Trish and Austin convince Ally to attend the annual Zaliens Convention in Miami. Unfortunately, Trish and Dez stumble upon real Zaliens and the foursome are forced to devise a survival plan.

Austin, Ally and Trish learn that Dez is related to the NBA's Dwyane Wade, who is also a big Austin Moon fan.

Austin tries to prove that he's not shallow to impress a girl.

When Ally's record producer teams her up to write a duet with a new artist, Gavin, Ally is caught off guard when he confesses he has a crush on her!

Dez gets an unexpected chance to direct a movie that Austin is in, but things don't go quite as planned when he has to work with Austin's co-star, Brandy Braxton, a high-maintenance actress.

Austin is afraid to perform after he gets his first negative review from a critic.

Trish gets nervous when a boy she likes takes her out on a date.

Austin agrees to be auctioned off on a date to raise money for Ally's charity.

Ally assumes an alias so she can continue to be Austin's songwriter.

Austin, Ally, Trish and Dez team together to try and win a Glee Club competition.

Austin and Ally plan to perform at a holiday party and give away Austin Moon dolls, but problems arise due to a mix-up at the toy factory. Meanwhile, Dez and Chuck compete for the role of Santa at the party.

Trish becomes jealous when she suspects that Ally has a new best friend.

Austin gets stuck to a priceless object at a Washington, D.C., museum and must find a way to return it before performing for the president.

Everyone imagines how their lives would be different if they had never met Austin.

Season 3 begins with Ally traveling to Portland to catch Austin's performance and being torn between continuing to work on her own music or joining her friends for the last leg of Austin's concert tour.