Sonny starts writing a song unaware that it's a song about her break-up with Chad. After her new neighbor and the "Patio" waitress, Mel criticizes Sonny over her music, the two decide to place a bet in order to prove that the audience will love Sonny's song. She attempts to sing it in the new coffee shop "The Patio", but fails because she is unable to perform it while facing Chad. Shortly after, Sonny realizes that the song she's written is about Chad with the help of Mel and that she still has feelings for him.
Someone on the set of So Random! and Mackenzie Falls starts to create rumors that Sonny is a thief when she temporarily leaves for her Homecoming in Wisconsin. This ruins her reputation, and she is asked to leave So Random!. Tawni supports Sonny as they drive back to Wisconsin, unable to clear her name. Meanwhile, Chad, Nico and Grady find out the truth back in Hollywood.
When Grace, an elderly woman, wins the "Be So Random! for a Day" contest, the "So Random!" cast ends up planning an "old geezer" sketch that not only offends Grace and her entire retirement home, but all elderly people. Grace and her friends turn the tables and play a practical joke on the cast. Meanwhile, Chad attempts to help a group of kids with their fear of clowns and ends up looking like one himself.
Sonny and her fellow cast members are forced to attend a public high school after they are all fired from the show because of their complaints about a new addition to the cast. Can Tawni, Nico, Grady, and Zora survive a normal high school, even though it's not the "musical" they thought it would be?
Feeling that Gassie doesn't get the affection that he deserves, Sonny takes it upon herself to show the dog love, love that it doesn't get from its trainer. Sonny then finds out that giving the dog affection effects Gassie's mood to flatulate on command when filming the "Gassie" sketches as well jeopardizing the feature film "Gassie & We". Sonny then gives Gassie too many dog treats that may have killed him. In the end it turns out Gassie was in shock from too many meatball treats and gets the love he deserves, also putting Chad into shock by pretending to be dead. Meanwhile, Nico and Grady borrow money from Dakota Condor to invest in fart noise lunch boxes for "Gassie & We".
Sonny and Tawni are invited on an exchange program to Glendovia because of the success of their Check-it-Out Girls sketch, but refuse to go together due to an unknown argument. When Tawni goes she is shocked to discover that it is a cultural wasteland and that the Glendovians think the characters are real check out girls. Meanwhile, an exchange student impresses a girl Nico and Grady like, and they both think it is because of his mustache. They then wear a mustache trying to impress her, but they get themselves stuck in their own mustaches because of the glue.