When Mary Kate Murphy joins a special science pilot program focused on climate change, the class opens her eyes to lots of things she never noticed before about her small suburban town: Kids waste tons of food at school without a second thought. Parents leave their cars running in the pick-up lane all the time. People buy lots of clothes they don’t really need. Some of her friends who live in the city and are bused to her school don’t always feel included. And the mayor isn’t willing to listen to new ideas for fixing it all.

Maureen and Francine Carter are twins and best friends. They participate in the same clubs, enjoy the same foods, and are partners on all their school projects. But just before the girls start sixth grade, Francine becomes Fran - a girl who wants to join the chorus, run for class president, and dress in fashionable outfits that set her apart from Maureen. A girl who seems happy to share only two classes with her sister! Maureen and Francine are growing apart, and there's nothing Maureen can do to stop it. Are sisters really forever? Or will middle school change things for good?

The prettiest: It’s the last thing Eve Hoffmann expected to be, the only thing Sophie Kane wants to be, and something Nessa Flores-Brady knows she’ll never be...until a list appears online, ranking the top 50 prettiest girls in the eighth grade. It’s time for a takedown. As the three girls band together, they begin to stand up not just for themselves, but for one another, too.

Seventh-grader Viv never looks forward to picture day. It’s just another day where she wears a boring braid and no one notices her. (Her two best friends, Milo and Al, don’t count, of course.) But enough is enough. This year, she’s taking matters into her own hands. Literally. Viv grabs a pair of scissors, her phone for live-streaming, and, well, bye-bye braid. Suddenly Viv is an over-night influencer at Brinkley Middle School. Everyone wants her help planning their next big moment—from haircuts, to dance proposals, activist rallies and mathlete championships. 

Five students meet in the school cafeteria when they're forced to complete their school community service hours. There's George: the brain. Sara: the loner. Dayara: the tough kid. Nico: the rich kid. And Miguel, the jock. They immediately know that they have nothing in common with each other... even though their school administration has decided that they all belong together.

Jen did not want to leave the city. She did not want to move to a farm with her mom and her mom's new boyfriend, Walter. She did not want to leave her friends and her dad. Most of all, Jen did not want to get new "sisters", Andy and Reese. As if learning new chores on Peapod Farm wasn't hard enough, having to deal with perfect-at-everything Andy might be the last straw for Jen. Besides cleaning the chicken coop, trying to keep up with the customers at the local farmers' market, and missing her old life, Jen has to deal with her own insecurities about this new family.

Ever since Ellie wore a whale swimsuit and made a big splash at her fifth-birthday party, she's been bullied about her weight. To cope, she tries to live by the Fat Girl Rules - like "no making waves", "avoid eating in public", and "don't move so fast that your body jiggles". And she's found her safe space - her swimming pool - where she feels weightless in a fat-obsessed world. In the water, she can stretch herself out like a starfish and take up all the room she wants. It's also where she can get away from her mom, who thinks criticizing Ellie's weight will motivate her to diet.

Maggie just wants to get through her first year of middle school. But between finding the best after-school clubs, trying to make friends, and avoiding the rumored monster on school grounds, she’s having a tough time...so she might need a little help from her 20-sided dice. But what happens if Maggie rolls the wrong number?

Sixth grade isn't as great as Rex thought it would be. He's the only kid who hasn't had a growth spurt, and the bullies won't let him forget it. His closest friend is unreliable, at best. And there's a cute girl in his class who he can't stop thinking about. With so much going on, everything is a blur—including Rex's vision! So when he discovers that he needs glasses, and his family can only afford the ugliest pair in the store, any hope Rex had of fitting in goes completely out of focus.

Quiet outsider Tillie is known around school for using her camera to find lost things, but when a boy named Jake needs help finding his dad, Tillie faces her biggest challenge yet. Ever since Tillie Green's car accident left her with a severe limp, she's kept herself hidden behind her camera. Through the lens, she watches her family and classmates, spotting the small details and secret glances that tell a much bigger story than what people usually see. Students call her "Lost and Found", because her camera knows when you last had your headphones.