Following the last show of Austin's tour, the gang does some sight-seeing at a Washington D.C. museum, where Austin accidentally gets stuck with a priceless object and must find a way to return it before performing for the President
Trish is nervous about an upcoming visit from a boy she has a crush on and does not act like herself when he takes her out on their first date. Meanwhile, Austin has to make a paper airplane for physics class.
Ally, Trish and Dez help relieve Austin from the slump he's fallen into after he receives his first negative review from a critic and is afraid to perform.
Dez gets an unexpected opportunity to direct a movie that Austin is in, but things prove problematic when he has to work with Austin's co-star, Brandy Braxton, a high-maintenance actress.
Ally teams up with country hot shot Gavin to write a song, and they hit it off, making Austin jealous and fearing that the team is breaking up. Meanwhile, Dez and Chuck compete to make the best parade float for the cheer leading team.
When Dez, Trish and Austin convince Ally to attend the annual Zaliens Convention that's being held in Miami, Trish and Dez happen to stumble upon real Zaliens and the foursome must devise a plan to survive.
Austin realizes that he should be at prom with Ally, not Piper. After thinking he was telling Trish, he told Carrie. Now Austin needs to figure out what to do.
When Ally quits Sonic Boom to make more time for her music career, her father decides to sell the store. She and the rest of the gang have a hard time coming to terms with the fact that the store is soon going to be gone forever.