LEMONADE MOUTH

High school freshmen Olivia White, Mohini "Mo" Banjaree, Charles "Charlie" Delgado, Stella Yamada, and Wendell "Wen" Gifford meet while in detention. When Miss Reznick, the music teacher supervising detention, leaves briefly, they tap out a beat and play instruments, with Olivia singing along. Miss Reznick returns and encourages them to enter the upcoming Rising Star music competition which the winner will get a record deal, which popular band Mudslide Crush is also slated to perform in.

Stella enters them all in Rising Star as well as the upcoming Halloween Bash. The five agree to form a band with Olivia on lead vocals, Stella on lead guitar and backing vocals, Mo on bass and backing vocals, Wen on keyboards, keytar, and rapping vocals, and Charlie on drums. At school, Stella spits lemonade on Ray Beech, the lead singer of Mudslide Crush, when he ridicules Olivia's stage fright. He refers to her as "Lemonade Mouth", giving the band its name. The band later discovers the school's lemonade machine is being removed, to their chagrin.

Mo breaks up with her boyfriend Scott Pickett, Mudslide Crush's guitarist, after she catches him flirting with a cheerleader. Prior to performing at the Halloween Bash, Olivia suffers a panic attack. Encouraged by her bandmates, Olivia performs with the band. Onstage, Stella objects to the removal of the lemonade machine and encourages her fellow students to freely express themselves. The principal, Stan Brenigan, angrily bans them from playing at school again, claiming their performance was a "political tirade." The next day, banners in support of Lemonade Mouth are posted around the school, raising their spirits. The band gets to perform in a pizza restaurant as a paying gig, away from Brenigan in a venue that he has no control of.

When Olivia is absent from school one day, the band visits her and learn that her cat, her only remaining memory of her late mother, has died, and that her father is in prison, leaving her in a depressed state. They open up to one another about each of their respective struggles, and discover that their song "Determinate" is being played on the local radio. Shortly after, Mo contracts the flu, Charlie breaks his fingers, Wen sustains a black eye, and Olivia loses her voice during an argument with Wen.

At Stella's behest, her bandmates reluctantly convene at the school to protest the removal of the lemonade machine. After being detained by police and contemplating the future of the band, they agree to perform at Rising Star. As each of their parents and guardians come to retrieve them from the police station, they reconcile their individual problems at home; Wen finally accepts his dad's girlfriend, Olivia gains the courage to send a letter to her incarcerated father, Mo gets her dad to accept her for who she is, Charlie realizes he doesn't have to live up to his older brother's prowess, and Stella realizes she doesn't have to be a genius to fit in with her family.

While performing at Rising Star, Olivia and Mo's respective ailments begin to resurface in the middle of their performance. Dejected, the band is about to exit the stage when the audience begins to sing their song to support them. Scott, fed up with Ray's hostile treatment towards Lemonade Mouth, leaves Mudslide Crush and plays his guitar alongside Lemonade Mouth, while the crowd sings along and applauds.

Mo and Scott later get back together. Charlie, who developed a crush on Mo while forming the band, takes an interest in a new girl. Wen attends his father's wedding as the best man. Stella meets Mel, the original owner of the lemonade machine, who helps donate a new music auditorium to the band's school with Principal Brenigan's approval. Olivia regains her voice, with Wen apologizing to her and gifting her a new kitten. Later, Olivia mails the entire story of the band's genesis to her father, wrapping up with news of Lemonade Mouth performing at Madison Square Garden, with Scott as their new rhythm guitarist.

Main characters: Olivia white, Stella Yamada, Wendel "Wen" Gifford, Mohini "Mo" Banjaree, Charles "Charlie" Delgado

Side characters: Ray Beech, The arrogant lead singer of the rival band Mudslide Crush and the main bully of the film who targets Lemonade Mouth.

Principal Stanley brenigan, The strict, sports-obsessed principal of Mesa High who cancels the arts and tries to suppress the band.

Mudslide Crush: Ray's bandmates and the school's favored musical group.

Scott Pickett, The guitarist for Mudslide Crush and Mo's love interest who eventually leaves his old band to join Lemonade Mouth as their rhythm guitarist.

Miss Jenny Reznik, The supportive music teacher who monitors detention, inspires the five students to play together, and becomes their biggest advocate.

Mel: The original owner of the school's lemonade machine who helps fund a new music auditorium at the end of the film.

Tommy Delgado, Charlie's younger brother.

Sydney Gifford: Wen's father's girlfriend/fiancée (and later stepmother).

Family Members: Various parents and guardians, including Gram (Olivia's grandmother), plus the Delgado, Yamada, Banjaree, White, and Gifford parents

The Detention Meeting: Supervised by music teacher Miss Reznick, the five students tap out a beat and play instruments together, discovering an instant musical chemistry. Origin of the Name: After Stella spits lemonade on Ray Beech—the arrogant lead singer of the rival school band Mudslide Crush—he mocks Olivia and calls them "Lemonade Mouth," which the group adopts as their official name. The Cause and Rebellion: The band unites to protest the school administration's prioritization of sports over the arts, the removal of the school's organic lemonade machine, and harsh censorship against student expression. Rising Star and Beyond: Despite initial stage fright, personal hurdles, and a loss at the "Rising Star" music competition, the band builds a massive underground student following and eventually performs at Madison Square Garden.