The brothers each have midterm exams for which they're studying while getting ready for the big tour. When their dad tells them that one of the boys has failed his exam, Kevin and Joe both start apologizing, but learn that it was Nick!
When Nick, Kevin, and Joe are asked to judge a beauty pageant, Stella initially disapproves but later she becomes a contestant to prove a point to the boys.
Kevin falls for Anya, a Scandinavian girl. She's the kind of girl who's out of place even in her hometown, but Kevin likes her just the way she is. But, when Anya keeps thinking she's embarrassing Kevin, she breaks up with him.
Joe and Stella go out on a double date – with other dates! Joe tries to impress Stella by overdoing it with his date, but then gets humbled when he realizes he forgot his wallet and has to ask Stella to pay for dinner.
Kevin's been reading up on the history of the firehouse and comes to believe it is haunted, so he does a paranormal investigation.
When an important music critic agrees to finally interview the members of JONAS, the guys get so caught up in the moment that they forget Stella's birthday. They try to make up for it by celebrating her birthday the way they used to when they were kids.
When Mom and Dad go on vacation, the boys are left alone. Being the oldest, Kevin assumes he's in charge. But when Nick tries to take control a power struggle ensues.
Kevin, Joe, and Nick decide to put together a surprise karaoke party to celebrate 15 years of being friends with Stella – their Friend-a-versary. Joe enlists Macy's help, but when Stella sees Macy and Joe sneaking around behind her back she gets jealous.
When a girl at school wrongly gets thrown into detention and the teacher can't bring herself to punish Joe as well, the girl accuses Joe of using his fame to get out of trouble.
When a struggling young actress pretends to have a relationship with Joe to further her career, the boys enlist Macy and Stella to scare her off.
Nick, Kevin, Joe and Stella all audition for the school play, The Three Musketeers! They all get the parts but Joe gets stage fright and bows out. But things change when Van Dyke Tosh gets the role Joe gave up and gets to kiss the fair maiden - Stella.
When Joe and Stella plan to go to a fashion show together, they are teased by Nick and Kevin who say it's "their first date." So, Joe gets paranoid and cancels on Stella and he continues to cancel various 'dates' with her!
During a bout of writer's block, Nick dreams about a song but he can't remember it when he wakes up. So, he's forced to reenact his worst day ever to help him remember the song from his dreams.
Joe has a crush on a girl who plays the cello. But when he joins the orchestra to try to get closer to her, she gets angry and accuses him of lacking any genuine interest in classical music.
Joe gets jealous when he finds out that Stell is going on a date with another guy, so he calls an emergency wardrobe meeting to keep her from going out.
Macy overhears that JONAS is looking for a back up singer for their next album and she offers up her singing services to Kevin. Unfortunately, he quickly realizes that Macy's singing is beyond awful.