Penny's mother has moved to Hog's Hollow, has opened a bakery that sells only cupcakes, and she has brought Penny with her. Penny is woebegone: all her friends and her dad are in New York City; she has to help her mother in the bakery; and Hog's Hollow's resident mean girl is making her life a misery.

Count on third-grader Grace to cook up a creative compromise just in time to save the day at the cupcake-themed school fair.

The girls of Peace, Love, and Cupcakes are feeling sentimental about the end of elementary school, especially after Principal Fontina asks Kylie to create a PLC junior club to live on at Blakely.

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.

Confession: Breaking up with my best friend is harder than I thought. . . . Hayley, her little sister, Chloe, and their mom have finally settled into their new home above their Gran's tea shop. But things at school aren't so peachy. Hayley's former best friend, Artie, is back in the picture and getting between Hayley and her new pal Meghan. Artie and Meghan are like oil and water -- they just don't mix! This looks like another recipe for disaster!...

"Delaney is shocked to find out her mom is expecting twins. She likes being an only child. It's been 10 years, and she's had her parents--and her room--all to herself. But her Cupcake Club pals are excited to bake for the baby shower--until Delaney's mom wants a giant stork made out of cupcakes"--

When Kylie tells her friend Lexi that she wishes she had someone to go the the dance with, a secret admirer begins to leave notes and gifts in her locker.

Delaney's best friends in Peace, Love, and Cupcakes support her bid to run for class president, but when Delaney's demands start infringing on PLC's ability to get out their orders on time, things start to get out of hand.

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.

"Things are slow at the cupcake shop this summer, and so when Mia's dad invites her on a long weekend trip to meet some of his college friends, she jumps at the chance-especially when she hears they have daughters her age. It turns out the girls work in an ice cream shop. Not only does Mia end up making new friends-she comes back with a new invention for the Cupcake Girls: an ice-cream cone cupcake!"--