When Katie's best friend Callie leaves her for a clique called the Popular Girls Club on the first day of middle school, Katie decides to find a group that she can join.

When Katie learns her mother's new boyfriend is her math teacher, Mr. Green, Katie is accused of getting special treatment in class, and it's the Cupcake Club to the rescue to help Katie deal with the rumors and the changes in her life.

"Mia is having a terrible day! Everything is going wrong. She woke up late and couldn't make her hair look perfect or brush her teeth, she probably failed a pop quiz, and she broke her glasses! But when her mom's cousin Laura arrives from Puerto Rico, she gives Mia a bracelet with a lucky charm. All of a sudden, Mia's luck changes for the better. Mia's thrilled--she'll never have a bad day again--or will she?"--Back cover.

"Lindsay Cooper is about to start middle school. In her free time, she works at her family's restaurant, The Park View, handing out the world's most delicious donuts at the Donut Dreams counter. Her grandmother started the counter as a way to send Lindsay's dad to college, and Lindsay wants to use her job the same way--to make her dream of going to school far away from her small town a reality. Home feels different ever since Lindsay's mom passed...

"Kelsey loves working in her family's restaurant at the Donut Dreams counter, but she feels like she could be doing something more. When her friends tease her about always having strong opinions, she decides to start a blog, Kelsey's Corner. Kelsey is positive her words will be her ticket to popularity. But she soon discovers a handful of good friends is far better than a baker's dozen of insincere ones."--Provided by the publisher.

"Casey thought that coming back from sleepaway camp would mean picking up right where she left off. But when she gets home, it seems like everyone has changed at least a little bit--even her BFF Lindsay. Not only that, she made a new friend at camp, a boy named Matt. Casey can't decide for sure if she likes him as a friend, or if she like-likes him. And Casey's middle school has a tough assistant principal...her mom! With so many changes stirring...

Moving on with her Cupcake Club friends despite lingering resentment over being ditched by her former best friend for a more popular group, Katie resolves to confront Callie and struggles to find ways to repair the friendship.

When Katie's best friend Callie leaves her for a clique called the Popular Girls Club on the first day of middle school, Katie decides to find a group that she can join.