When Dawn announces that she is moving back to California, the other baby-sitters cannot believe that she would even consider leaving them. 

Stacey is caught in a loyalty tug-of-war between old friends and new. 

In the landmark 100th book in the series, Kristy disbands the club because of a combination of outside pressures and internal tension.

Jessi's Christmas and Kwanzaa seasons are overshadowed by a car accident in which Jessi's baby brother, Squirt, is injured, and the difficult time proves challenging to her family's holiday spirit.

Since Stacey's parents got divorced, it hasn't been easy. Stacey hates being put between them, and she misses her dad sometimes even though she gets to see him often. And now both of her parents are depending on Stacey. They each need her badly. And she can't be in Stoneybrook and in New York at the same time. How will Stacey choose between her mom and her dad...again?

When Kristy's friend, Bart, decides that he wants to be her real boyfriend, Kristy is afraid to tell him that she does not feel the same and enlists the help of Mary Anne for courage in expressing herself.

Mary-Anne's life is turned upside down when the Club members participate in a scary and intensive first aid class, and Logan's parents decide to send him to a boarding school.

Jessi discovers that one of the girls in her dance class is anorexic, and she and her friends soon learn about the seriousness of the illness. 

Deciding that she wants to move back to California permanently, Dawn worries about what she will say to the rest of the baby-sitters, who do not understand when they hear the news secondhand.

Despite her busy fall schedule, Stacey takes on the project of helping the fashion clueless newcomer Tess to become better educated about clothing and makeup, but the well-meaning baby-sitter is soon frustrated by Tess's resistance.

Asking her older brother Charlie to train her softball team over spring break, Kristy is convinced that Charlie is a great coach, until he meets Angelica and is no longer able to pay attention to the kids.

When Dawn's brother Jeff comes from California for a visit, a nice, peaceful family reunion erupts into a feud between the Schafers and the Spiers.

The baby-sitters love getting new clients. So when the Lowells contact the club, everyone is thrilled. For Mary Anne, sitting for the Lowells is a snap, and the kids are adorable and obedient. But when Claudia meets the family, Mrs. Lowell will barely look her in the eye, and the kids are downright rude! The next time Mrs. Lowell calls the BSC, she requests another sitter - anyone but Claudia. Claudia has no idea what she did wrong, but the BSC won't rest until they find out!

Wishing that she had a boyfriend, Claudia starts a personals column in the school newspaper in the hope of finding the "perfect boy."

Haley Braddock has never given the BSC much of a hassle before. But now she's out of control! After Claudia catches Haley in a lie - and Haley gets grounded for it - this formerly quiet BSC charge turns against Claudia in a big way.