Who's afraid of middle school? Not Katie Brown, After all, it can't be that different from elementary school. But, boy, was she ever wrong! After her best friend ditches her for a new group of friends called the Popular Girls Club, Katie is left alone and starts to wonder if there's an Unpopular Girls Club she can join. Luckily, Katie finds her way with a great new group of friends and together they form their own club. Four friends plus cupcakes...

People line up around the block to buy Mama Tova's cupcakes. But who could be trying to steal her secret recipe? The Boxcar Children follow clues to a cupcake contest, where they must use their mystery-solving skills to find a thief.

Mia tries to make friends with Olivia, the new girl, but when Olivia makes fun of the other Cupcake Club girls and tells Mia she shouldn't hang out with them, Mia must make a decision about her new friendship.

Aspiring to win the science fair with a project that proves that cupcakes are good for you, Alexis finds her ambitions challenged by her crush's association with another girl and a cupcake order for a mean girl's sweet sixteen.

Alexis Becker loves to organize and plan and set goals, which is why she is in charge of the business end of the Cupcake Club. But when she suddenly develops a major crush on Matt Taylor - who happens to be Emma's brother - things get a little disorganized.

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.

Meet Jenna. She's the Cupcake Club's official taste tester, but the past few weeks have not been so sweet. Her mom just got engaged to Leo- who Jenna is sure is not "The One"- Peace, Love, and Cupcakes has to bake the wedding cake. Jenna is ready to throw in the towel, especially when she hears the wedding will be in Las Vegas on Easter weekend, one of the most important holidays for the club's business! Can Jenna and her friends handle their busy...

When fashionista Mia hears someone is starting a fashion club at school, how can she resist? After all, working in fashion someday is her dream. But can she manage being in two clubs at the same time, or is she spreading herself too thin? And will her Cupcake Club friends still be as sweet to her, or will Mia have to choose between cupcakes and fashion plates?

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.

When one small mouse finds one big cupcake, he wonders how he will get it home because it's much too heavy for him to carry; one by one, Little Mouse asks his animal friends to help and they all agree, but only after taking a nibble of the yummy treat.