Sonny hosts a "Walk-A-Thon For Books" for kids and gives each of them Tawni's Extreme Skinny Jeans. When Chad hears of this, he then hosts a "Walk-A-Thon Against Books" and also sells the skinny jeans. Then, all the kids end up suffering from SPS (Skinny Pants Syndrome).
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.
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 writes a song and plans to sing it during the next show. But when Tawni steals Sonny's song, Sonny uses Grady and Nico's magic act to her advantage.
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?
The casts of So Random! and Mackenzie Falls go camping together to end the rilvary between the two shows. On the camping trip, Ms. Bitterman, who is their chaperone, tells them the legend of a very dangerous creature called Candy Face, making everyone jittery.
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.
When Grady's older brother teases Grady and makes him feel bad because he doesn't have a girlfriend, Sonny pretends to be his lady. But Grady's big bro visits, and the pair have to make things look more authentic.
After Sonny starts watching Mackenzie Falls, Chad ask Sonny out on a date, which she accepts. Then she begins to have second thoughts when she realizes how her castmates will react.
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.
After going to a taping of her favorite childhood show, Pauly and Pals, Sonny gets an opportunity to be Pauly for a day, but this makes her woefully late to her date with Chad, making him worry that she's lost interest in him.
When Sonny comes down with the flu, Chad decides to take over her to-do list so she can go home and recuperate, but finds it much more difficult than he expected.
When So Random! and MacKenzie Falls are both nominated for the best TV show in the "Tween Choice Awards", additional friction is added between the two casts.
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.
