When her crush Brandon reveals that the animal shelter where he volunteers is in danger of being closed, Nikki and her friends enter an ice skating competition to help raise money, an effort that is compromised by an interfering Mackenzie.

Georgia Khatchadorian plans to excel at Hills Village Middle School in all the places her troublemaking brother failed.

"Meet Nikki Maxwell! She's starting eighth grade at a new school--and her very first diary packed with hilarious stories and art. . . Nikki confesses all in her first diary ever: her epic battle with her mom for an iPhone, meeting her new soon-to-be BFFs Chloe and Zoey, falling for adorably sweet crush Brandon, dealing with her zany little sister Brianna's antics--and the immediate clashes with mean girl MacKenzie, who becomes Nikki's rival in a schoolwide...

Nikki's diary describes a frightful Halloween, on which she helps with her sister's ballet class party at the same time she is Brandon's date for their middle school Halloween dance, where she has promised to spend the evening with her two best friends.

Babymouse finally gets a cell phone in middle school and tries to increase her popularity by building up a following on social media, which turns into much more work than she thought it'd be.

From different perspectives, explores middle school bullying as Maggie, tired of Elizabeth Moon's superior attitude, creates a fake profile on a popular social networking site to teach Elizabeth a lesson.

When a ghost begins haunting Duncan, turning his life upside down and ruining his cool image, he and his best friend Markie turn to the class "nerd," whose plan for getting rid of the ghost comes at a steep price.

"Twelve-year-old Jessica Darling receives another cryptic list from her older sister, Bethany. While hosting a slumber party and planning a Halloween costume, Jessica tries to navigate the seventh grade social scene, with mixed results"--

The day before seventh grade begins, twelve-year-old Jessica Darling gets a list from her sister, whose popularity and beauty made her a junior-high standout, but when she tries to follow it, all goes awry, including losing her best friend.

Querida Senorita Sabelotodo, Mi peor enemiga esta propagando chismes sobre mi... Socorro! Oh, no! El nombre de tu peor enemiga empieza por --Mac y termina en --Kenzie Entonces eres TU la que ME tiene que aconsejar! Tu amiga, SENORITA SABELOTODO (Tambien conocida como Nikki Maxwell, experta en ligues y otros asuntos de vital importancia para mis mejores amigas).