Reaching a compromise with her parents when they say she is too young to attend a concert alone, Mia discovers that she is being cyberbullied on social media and teams up with her fellow Cupcake Club members to discover who is behind the attacks.

Giving up her role as leader of the Cupcake Club when she feels her organizational skills aren't appreciated, Alexis discovers valuable lessons about leadership and asking for help in the face of disorder, missed deadlines, and dwindling supplies.

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.

Katie is about to burst when the rest of the Cupcake Club entrusts her with their secrets, but this group of best friends soon realizes that sharing and keeping secrets is what friends are for.

When Katie's mom asks her to spend time with Emily, her boyfriend's daughter, Katie brings her to a meeting of the Cupcake Club and things go well, but maybe too well for Katie's liking.

Sierra does lots of things. She's captain of the softball team, the director of the school play, and she's on Student Council, but her favorite thing to do is work at the ice cream shop with her best friends Tamiko and Allie. But when her parents decide to foster three kittens and their mama, Sierra's life gets a lot more catty! Can Sierra do it all--and maybe find homes for the cats, too?--

"Have a sprinkle of happy! Tamiko is the Molly's Ice Cream "queen of social media." She loves posting photos with funny hashtags of the yummy ice cream concoctions she and her pals create. But when she posts a not-so-funny joke on social media that goes viral, she worries all her friendships will suddenly melt away. #UhOh"--Dust jacket.

Although Mia feels fairly satisfied with her life, she worries about who should attend parent-teacher night and her failing grade in Spanish.

For as long as Katie can remember, it's just been her and her mom. But that's about to change. First her mom gets a boyfriend. And then Katie gets an email from her dad, whom she's never met, saying he wants to get together. Katie's not sure she's ready for so much change in her life. With so much happening at once, Katie's counting on her friends in the Cupcake Club to help her find the sweet side of what seems like a sticky situation.

Supported by her friends, Sierra enters a local singing contest, but her confidence falters when she sees her talented competition.