Plot

Cat and Jade get banned from a karaoke bar. Tori nurses Trina after her wisdom teeth are removed. Tori leaves the boys to take care of Trina.

Tori's friends sing at a local karaoke club, and end up competing with a pair of stuck-up girls who are regular performers there. But regardless of how good they may be competing with those girls proves to be much more difficult than they expect, since one of the girls' father owns the club, and the competition is fixed. Outside of entertainment-related subjects, Tori struggles to take care of Trina after she undergoes dental surgery, while their parents take a trip to Santa Barbara. Tori later helps Jade and Cat get revenge on both girls, and after Hayley and Tara lose, they are stuck taking care of Trina.—Daniel Timothy Dey

In this two-part episode, Tori is forced to be the one who has to take care of Trina since she will have her wisdom taken out and their parents are going to be away. Taking care of Trina becomes a really difficult struggle for Tori. Meanwhile, the rest of the group go to Karaoke Dokie, a new place to socialize, but it does not seem fun at first. Jade and Cat are targeted by two other girls who are mean to them. Feeling threatened by their singing, the girls banish the group from Karaoke. In the hope of revenge, Jade and Cat enlist Tori's help. Jade and Cat make a bet with the two other girls. While that happens, Andre, Beck, and Robbie are forced to take care of Trina.—RECB3

While trying to do a photo shoot at home with their dad's new camera, Trina (Daniella Monet) answers Tori's phone when the school's hottie, Mark McCallan, calls to ask Tori out. Since Tori was washing her hair, Trina tells him Tori has plans, but that she is hotter and free on Friday, so he asks Trina to play glow-in-the-dark mini golf on Friday night instead. When Tori (Victoria Justice) finds out, she gets mad and tries to bludgeon Trina with their dad's new camera stand until he intervenes. He tells Trina that she won't be able to go out Friday night because she's getting her wisdom teeth out on Friday afternoon. Tori laughs and dances until her dad says that she'll have to take care of Trina since he and their mom will be in Santa Barbara all weekend, which they used as an excuse to avoid taking care of Trina. Trina laughs, causing Tori to get mad at her and try to pull Trina's wisdom teeth out herself, chasing her again.

The next part of the episode begins with Cat and André (Ariana Grande and Leon Thomas III) doing a scene in acting class in the Blackbox Theater, but Tori's phone interrupts the scene when Sikowitz (Erwin Launge) finishes. At the end of the acting class, Sikowitz asks the class to share their plans for the weekend. Sikowitz points out that Robbie (Matt Bennett) has no plans. Robbie scoffs but admits that he doesn't. Rex (Jake Fowler) says that he will be "partying" with a couple of Northridge girls. Cat tells everyone (despite bored looks on her classmates' faces) that she and Jade (Elizabeth Gillies) are going to a new karaoke club in Los Feliz, Karaoke Dokie since they have singing competitions on weekends. Robbie asks if he and Rex can come and sing there as well while Rex protests about Robbie forgetting about the Northridge girls. Robbie assures him that the girls can come and watch, but Rex worries about being forced to spend his money on their food.

Tori wishes she could go but tells them she has to spend her weekend taking care of Trina because of her parents leaving for Santa Barbara. The process of taking care of Trina after her wisdom teeth are taken out proves to be really difficult. Trina is constantly moaning in pain and refuses to take her antibiotic (which Tori forces it into her mouth), let Tori ice her jaw with frozen peas, or flush her gum sockets with salt water, which constantly ends up with them fighting and arguing.

At the karaoke contest, Cat and Jade bring Beck (Avan Jogian) and André with them. While the gang is hanging out, Robbie and Rex sing the song Forever Baby. When Jade steps away to get a soda, two girls, Hayley Ferguson and Tara Ganz,(Jillian Clare and Jamie Snow) flirt with Beck and André. When Jade shows up, Hayley and Tara refuse to back down. Tara points out André's Hollywood Arts jacket, which Hayley calls a "school for wannabes". André and the gang try to defuse the situation by talking about buffalo nuggets and fun facts about the history of karaoke. After that, they challenge Cat and Jade to a sing-off.

Hayley and Tara are up first and sing "Number One" by Ginger Fox, showing that they are not particularly talented singers. When they perform, the Hollywood Arts gang is shocked to hear how bad Hayley and Tara sing. Next, Cat and Jade then sing "Give It Up" next and make their school proud by showing off how well they can sing in comparison to Hayley and Tara. The crowd enjoys Cat and Jade's song more, but the owner of the karaoke club comes out to announce that the winner is Hayley and Tara. It's revealed that Hayley and Tara won because the karaoke club owner is Hayley's dad. Rex, Beck, Jade, André, and Cat all express their outrage at the competition being fixed, but even with other crowd members booing his call, the owner bans Cat and Jade from ever singing at Karaoke Dokie again. The gang, furious, declare that they're leaving immediately... but only after finishing their food.

The next day, Tori is sleeping on the couch after she had to deal with the torture of taking care of Trina. Her friends come over with frozen yogurt to cheer her up. Furious that the competition was rigged, Jade makes up a scheme involving Tori. After André, Beck, and Robbie come to check on Tori, Cat and Jade visit to tell her about the plan. With Jade stealing Beck's car keys so he can't leave the house, the girls leave the boys to take care of Trina and get their plan underway. For Andre, Beck and Robbie, taking care of Trina also proves to be difficult for them with Trina biting Robbie's nose when he tries to flush her gum sockets with salt water, and fighting off the three.

Jade and Cat show up while Hayley and Tara are singing "Hate Me Love Me" by Ginger Fox. They bet Hayley and Tara that anyone in the place could impress the audience more by letting them choose who from the audience to sing against. Hayley and Tara pick a hideous girl named Louise Nordoff to compete against, not knowing she is actually Tori in disguise, thinking that this "Ugly Betty" will lose easily. Cat and Jade, knowing that is Tori and she would easily beat them, tell them not to pick her but someone with a chance but Hayley and Tara insist. The terms of the bet are that if Hayley and Tara win, Hayley gets to make out with Beck, and if they lose, they have to take care of Trina, who Cat and Jade know will be torture to work with.

Tori picks the song "Freak the Freak Out" despite the MC telling her the intensity of the song. However, she defies all odds and surprises everyone (except for Cat and Jade who know about the plan), especially Hayley and Tara, by taking off her ugly girl disguise and revealing her true self. The audience loves Tori more than Hayley and Tara and as a result, she is declared the winner. Everyone including Cat and Jade celebrates with her, signaling that Cat and Jade's ban is officially lifted and Jade's plan is a success. Tori then comes home and Robbie, Beck and Andre are upset that she, Cat and Jade left them at the Vega house to take care of Trina. Beck is upset that Jade took his car keys and Robbie is upset because he was covered in Trina's gum blood due to him doing most of the tasks. They keep arguing until Hayley and Tara come over. Tori tells them that the three are done taking care of Trina when Robbie says it Tori's turn, she says it's now Hayley and Tara's turn because they lost to her back at Karaoke Dokie. Hayley didn't want to do one of the tasks but Tori tells her that they lost their bet and had to deal with it.

In the end, Sikowitz sings "Number One" by Ginger Fox, the same song ironically Hayley and Tara sang when they faced Cat and Jade. While the gang is watching him, Hayley and Tara are forced to deal with the torture of taking care of Trina. Their tasks prove harder than Tori and Robbie because unlike the earlier scenes, the Vega house is messed up and Trina is hiding from the two. She tackles Hayley but she and Tara put her in a lock. Her parents come home but when her father sees Trina fighting the two while Hayley is attempting to put the gauze in Trina's mouth, he tells Holly Vega to go back into the car. Back at Karaokie Dokie, he imitates a scene from Flashdance and Shrek 2, sitting on a chair and releasing water on himself, applauded by the rest of the gang who then hugs him in joyous celebration.