Trish gets a visit from a boy she is crushing on and she acts strangely when he asks her out on a date, she seeks advice from Dr. Cupid, who is actually Dez.

Austin must prove that he's not shallow to impress a girl he wants to take on a date.

Austin begins to realize he has stronger feelings for Ally than for Piper, when she says no to Gavin for prom.

Carrie threatens to tell her sister, Piper, that Austin would rather go to prom with Ally; Piper is already suspicious of Austin's feelings.

Trish gets the lead role in the school play; she quickly drops out when she finds out someone is mocking her on the internet.

As her album is preparing to be released, Ally realizes that with all the time she's spending with her music, she won't have time to work at the store anymore, and is forced to quit, which allows Lester to finally sell the store- but when the gang finds out that the new owner, Ms. Krum, wants to demolish Sonic Boom to turn it into a box store, they must find a way to stop Lester before it's too late. Meanwhile, Carrie requests Trish and Dez's help to find a new job when she gets fired from Shredder's. In the end, Carrie starts working at Sonic Boom taking Ally's place, while she is promoting her album.

Austin and Ally's relationship hits another road block when his music label forces him to hide their relationship from the public. Meanwhile, Dez contemplates moving to L.A. in an effort to be closer to his girlfriend and attend film school.

The gang shares an emotional reunion in Miami at Ally's triumphant homecoming gig. When Austin learns that the foursome's time together is only temporary, he contemplates enrolling in military school.

Trish books Billie and Bobbie of "The Billie and Bobbie Show," a famous brother and sister duo, to talk and perform with the students of the A&A Music Factory. Meanwhile, when a code inspector comes to look at the music school and threatens to shut it down, the foursome learns the famous duo have ulterior motives.

When Austin and Ally are paired together in Home Ec, they get to imagine life together as a married couple. Meanwhile, Trish helps Dez book a job directing a commercial.

Ally is performing at an awards show but the producers are worried about her dancing abilities.

Years after the gang has gone their separate ways, Ally, Austin, Trish and Dez meet-up and learn what they have all been up to, individually.