When Mia arrives at her new school, her goal is to be open to and friendly with everyone, but everyone at Park Street School fits into a clique. When the Popular Girls Club takes an interest in Mia's awesome fashion style and wants to recruit her, Mia must decide between them and her great new Cupcake Club friends. It's like choosing between her divorced mom and dad and her old house and new house. Is it always going to be Mia in the middle, or can...

When scholarship student Nikki Maxwell, whose father is the school exterminator, decides to enter the talent show at her expensive private school, her nemesis MacKenzie threatens to reveal Nikki's status to the rest of the school.

Two best friends embark on a project to study the behavior and taste of the popular girls at their elementary school so that by the time they get to middle school they too will be in the right crowd.

"Nikki and her bandmates are looking forward to an AWESOME summer on tour as the opening act for the world famous Bad Boyz! Nikki is a little worried when her frenemy, MacKenzie Hollister, weasels her way into a social media intern position with the tour. But she has a total MELTDOWN when she learns that MacKenzie is her new roommate! Will Nikki survive her dream tour as it quickly goes from AWESOME to AWFUL?!" --

"When Rafe Khatchadorian is sent to Camp Wannamorra, he teams up with his bunk mates to fend off the more "popular" kids' plans to ruin their summer"--

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.

After moving to a new town, fifth-grader Marty worries about fitting in and must go up against a scientist out for revenge when he discovers a robotic dog in his new house.

"It's a frenemy showdown and Nikki Maxwell has the worst luck. Of all the schools she could have been assigned to for the student exchange week program, she's stuck at North Hampton Hills, her arch nemesis MacKenzie Hollister's new school. Even worse, there might just be someone at NHH who can out-MacKenzie MacKenzie! At least Nikki can write about every moment of drama in her diary, so readers won't miss a moment of it. Can the queen of dorks survive...

Lydia and Julie decide to start a rock band with their friends, unfortunately, none of them are very good musicians and suddenly the whole school knows about their band and wants to hear them play.

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.