Unable to find a new passion, Austin feels forced to take a job at his parents' mattress store, and Ally struggles to keep up with an influx of music students. Dez and Trish try and help the duo to come up with a plan that will solve both of their problems.

The gang has less than a week to teach first-time music students how to play in a band in anticipation of the A&A Music Factory's grand opening.

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.

One of Austin & Ally’s music students is upset about spending Christmas away from her father, so the gang does everything they can to try and make her happy and realize that they’re her family too.