When Kristy Thomas has the great idea to form a baby-sitters club - a chance to earn money and spend time with her friends, all while doing something they each love to do - she has no idea how much the club will change everything. Crank calls, uncontrollable toddlers, wild pets, untruthful clients...running a business is hard work! Kristy and her co-founders, Mary Anne, Claudia, and Stacey, are sure they can handle anything. But only if they stick together....

Stacey doesn't like to tell everyone that she has diabetes. Her friends in the Baby-Sitters Club are supportive, but Stacey has lost other friends who didn't understand her condition. Stacey's parents don't seem to understand, either; they're constantly taking her to new doctors. The truth is, she likes her doctor and just wants to spend her time being a normal girl and hanging out with the Club. Can Stacey find the courage to be honest - with everyone? 

Mary Anne has never been a leader of the BSC. So when a fight breaks out among the club's four members, Mary Anne feels a little lost, unable to depend on Kristy, Stacey, or Claudia anymore. Sitting by herself in the cafeteria is bad enough; when Mary Anne has to baby-sit a sick child without any help from the club, she knows someone has to take action. It's time for Mary Anne to step in and save the day! 

As the newest member of the BSC, Dawn is eager to prove herself. So when a big job comes along, she jumps at the chance to show everyone what she's made of. The Barretts are even more challenging than Dawn expected. The house is a mess, Mrs. Barrett is unreliable, and the kids are out of control. Dawn knows she's a great baby-sitter, but this is impossible! She only knows one thing for sure - a member of the BSC never gives up! 

Kristy's mom is getting married, and everyone is coming to town to help, bringing their kids with them. Fourteen kids! Kristy is sure she and Stacey, Claudia, Mary Anne, and Dawn can handle it - they're professional baby-sitters after all, and Kristy's mom has offered them a lot of money to take on such a big job.

But will a week of changing diapers, stopping fights, solving mix-ups, and keeping 14 children entertained prove to be too much for the BSC? Can they keep things under control for Kristy's big day?

Claudia's sister, Janine, is too busy being smart to be nice to anyone - even their grandmother, Mimi. But Claudia doesn't have to see Janine too much this summer, since the Baby-Sitters Club is starting a new play group. It's going to be so much fun! But then Mimi has a stroke, and the whole summer changes. Now Claudia is "Mimi-sitting," and Janine is no help at all. How can the Kishi sisters get along when Janine is always so mean?

Stacey and Mary Anne are baby-sitting for the Pike family for two weeks at the New Jersey shore. Things are great in Sea City: There's a gorgeous house right on the beach, a boardwalk, plenty of sun and sand...and the cutest boy Stacey has ever seen! Mary Anne thinks that Stacey should leave Scott alone and focus on the Pike kids, but Stacey's in love. Looking for reasons to hang around his lifeguard stand takes up all of her time, which means Mary Anne has to do the job of two baby-sitters.

Stacey's so excited! She's invited her friends in the Baby-Sitters Club to New York City for a long weekend. It's going to be perfect - a party and a sleepover on Friday, a big baby-sitting job on Saturday, and lot of sightseeing on Sunday. But what a mistake! The BSC is way out of place in the big city. Mary Anne sounds like a walking guide book, Dawn is afraid of everything, Kristy can't keep her mouth shut, and Claudia is jealous of Stacey's friends. Can Stacey be in the BSC anymore?

Claudia has always been the most outrageous girl in her class...until Ashley Wyeth comes along. Ashley's really different - she dresses in hippie clothes, wears six earrings and work boots, and is the most fantastic artist Claudia has ever met. Ashley says Claudia has artistic talent, too, but thinks Claudia should spend more time on her "calling" and stop wasting time on the Baby-Sitters Club. The baby-sitters are sick of Ashley Wyeth, and they feel like Claudia is a traitor. Claudia has to decide: either the BSC or the new girl - one of them's got to go!

Claudia has a sad good-bye to make. Her grandmother, Mimi, has just died. Claudia understands that Mimi was sick for a long time, but she's still mad at her grandmother for leaving her. Who will help Claudia with her homework...and share "special tea" with her? 

Mary Anne used to have to wear her hair in braids, keep her room painted pink, and ask her dad before she did anything. But not anymore. Mary Anne's been growing up...and the Baby-Sitters Club members aren't the only ones who have noticed. Logan Bruno likes Mary Anne! He has a dreamy southern accent, he's awfully cute - and he wants to join the Baby-Sitters Club. The baby-sitters aren't sure Logan will make a good club member. And Mary Anne thinks she's too shy for Logan. Life in the BSC has never been this complicated - or this fun!

Karen will try anything! Karen has new roller skates. She is a very good skater. She can ever do tricks. But oh, no! Karen falls down and breaks her wrist! She has to go to the hospital and get a cast. Karen wants somebody famous to sign her cast. It isn't going to be easy - but Karen won't give up till she gets the job done!

Hoping to provide a male role model for a new charge whose parents' divorce has him missing his father, Mary Anne invites Logan to accompany her baby-sitting jobs and has a lot of explaining to do when Mrs. Kuhn does not understand. 

Karen feels like an ugly duckling. Her baby teeth are all falling out, and she has to wear new glasses, too! Karen needs a new haircut to make her look glamorous. But the beauty parlor lady cuts Karen's hair all wrong. Now she's uglier than ever! What will all the kids at school say?

Lately, it seems like each of the baby-sitters besides Dawn has been singled out...and she's a little jealous. But now it's Dawn's turn to shine: Mrs. Pike has asked her to help prepare Margo and Claire for the Little Miss Stoneybrook contest! Dawn's going to do everything she can to help her charges win, even if Margo's only talent is peeling a banana with her feet. But then Kristy, Mary Anne, and Claudia are helping Karen, Myriah, and Charlotte enter the contest, too. It's hard to tell whether the competition is fiercer at the pageant - or in the BSC!