Twelve-year-old Lucy Desberg is a natural problem solver. After the local homecoming queen shows up at her family's struggling drugstore with a beauty disaster that Lucy helps to fix, Lucy has a long line of makeover customers for every school dance and bat mitzvah. But all the makeup tips in the world won't help save the pharmacy. If only she could find a way to make the pharmacy the center of town again - a place where people want to spend time, like in the old days.

Eleni is the kind of person who’s always had a BFF—an automatic, guaranteed by-her-side person—at home, at school, and at camp. And since before she was even born, her very best friend has been Sylvie Bank. But when Sylvie’s end-of-summer birthday party becomes the end of their friendship, Eleni can’t picture starting middle school without her BFF by her side. She can’t picture anything without her BFF—especially the looming school overnight. Who will she even room with?

Molly Frost is fed up.... Because Olivia was yelled at for wearing a tank top. Because Liza got dress coded and Molly didn't, even though they were wearing the exact same outfit. Because when Jessica was pulled over by the principal and missed a math quiz, her teacher gave her an F. Because it's impossible to find shorts that are longer than her fingertips. Because girls' bodies are not a distraction. Because middle school is hard enough.

Eleven-year-old Remy loves Seagate, the island where her grandmother had a house and where her family spends every summer vacation. But this year’s different. Remy misses her dog, Danish, who recently passed away. The usual Seagate traditions don’t feel the same - and neither does her relationship with her two best friends, Micayla and Bennett. Micayla’s family is moving to Seagate year-round, and she’s spending more time with the year-round kids.

Once upon a time, a girl named Kristy Thomas had a great idea: to form The Baby-Sitters Club with her best friends. And now 12-year-old Malia Twiggs has had a great idea too. Technically, she had Kristy's idea. (And technically, little kids seem gross and annoying, but a paycheck is a paycheck). After a little convincing, Malia and her friends Dot and Bree start a babysitting club to earn funds for an epic birthday bash. But babysitting definitely isn't what they thought it would be.

Ally has been smart enough to fool a lot of smart people. Every time she lands in a new school, she is able to hide her inability to read by creating clever yet disruptive distractions. She is afraid to ask for help; after all, how can you cure dumb? However, her newest teacher Mr. Daniels sees the bright, creative kid underneath the trouble maker. With his help, Ally learns not to be so hard on herself and that dyslexia is nothing to be ashamed of.

Lucy Callahan was struck by lightning. She doesn't remember it, but it changed her life forever. The zap gave her genius-level math skills, and ever since, Lucy has been homeschooled. Now, at 12 years old, she's technically ready for college. She just has to pass 1 more test--middle school!

Everything about Jessie is wrong. At least that's what it feels like during her first week of junior year at her new ultra-intimidating prep school in Los Angeles. Just when she's thinking about hightailing it back to Chicago, she gets an email from a person calling themselves Somebody/Nobody (SN for short), offering to help her navigate the wilds of Wood Valley High School. Is it an elaborate hoax? Or can she rely on SN for some much-needed help?

Margaret Simon, almost 12, has just moved from New York City to the suburbs, and she’s anxious to fit in with her new friends. When she’s asked to join a secret club, she jumps at the chance. But when the girls start talking about boys, bras, and getting their first periods, Margaret starts to wonder if she’s normal. There are some things about growing up that are hard for her to talk about, even with her friends. Lucky for Margaret, she’s got someone else to confide in...someone who always listens.

When Truly is invited to sit at the Popular Table with the group she has dreamed of joining, she can hardly believe her luck. Everyone seems so nice, so kind to one another. But all is not as it seems with her new friends, and soon she's caught in a maelstrom of lies, misunderstandings, accusations and counter-accusations, all happening very publicly in the relentless, hyper-connected social media world from which there is no escape.

Sixteen-year-old Lara Jean Song keeps her love letters in a hatbox her mother gave her. They aren’t love letters that anyone else wrote for her; these are ones she’s written. One for every boy she’s ever loved - five in all. When she writes, she pours out her heart and soul and says all the things she would never say in real life, because her letters are for her eyes only. Until the day her secret letters are mailed, and suddenly, Lara Jean’s love life goes from imaginary to out of control.

For seventh-grader Mila, it starts with some boys giving her an unwanted hug on the school blacktop. A few days later, at recess, one of the boys (and fellow trumpet player), Callum, tells Mila it's his birthday, and asks her for a "birthday hug." He's just being friendly, isn't he? And how can she say no? But Callum's hug lasts a few seconds too long, and feels...weird. According to her friend, Zara, Mila is being immature and overreacting. Doesn't she know what flirting looks like? But the boys don't leave Mila alone.

Gracie has never felt like this before. One day, she suddenly can't breathe, can't walk, can't anything - and the reason is standing right there in front of her, all tall and weirdly good-looking: A. J. But it turns out A. J. likes not Gracie but Gracie's beautiful best friend, Sienna. Obviously Gracie is happy for Sienna. Super happy! She helps Sienna compose the best texts, responding to A. J.'s surprisingly funny and appealing texts, just as if she were Sienna. Because Gracie is fine. Always! She's had lots of practice being the sidekick, second best.

As a part of her father's bug-extermination contract, 14-year-old Nikki J. Maxwell has been awarded a scholarship to a prestigious private middle school. So...new school. New mean girl. New crush. New diary, so Nikki can spill about all of it....

Five years. That's how long Coyote and her dad, Rodeo, have lived on the road in an old school bus, criss-crossing the nation. It's also how long ago Coyote lost her mom and two sisters in a car crash. Coyote hasn't been home in all that time, but when she learns that the park in her old neighborhood is being demolished - the very same park where she, her mom, and her sisters buried a treasured memory box - she devises an elaborate plan to get her dad to drive 3,600 miles back to Washington state in four days...without him realizing it.