Mallory has always wanted to be a member of the baby-sitters club. But the baby-sitters don't make it easy. Mallory begins to think she will start a new club.
Each member of the Baby-sitters Club sponsors a different girl in the Little Miss Stoneybrook competition, as Dawn also tries to cope with the break-up of her family after her parents are divorced.
Mary Anne feels she and Logan are spending too much time together so she suggests they see less of each other. Logan takes it the wrong way and this could be the end of Mary Anne and Logan.
Eleven-year-old Mallory is excited when it looks like she may be invited to join the Baby-sitters Club, but the baby-sitters have to learn some lessons in fairness first.
Karen is very proud of her big stepsister Kristy. So she's been copying everything Kristy does, to be just like her. Then Kristy does something terrible. What would Karen think of her big sister if she knew the truth?.
Claudia's wacky Aunt Peaches is moving back to Stoneybrook and she's going to have a baby. All is well until one of Peaches's adventures gets Claudia into trouble. When she blows up at Peaches something awful happens, and she has to make amends.
Dawn visits her brother and dad in California and finds it's better than she remembered. She begins to wonder if she should stay in California--but can she really leave Stoneybrook?.
Jessi can't believe it, but even stars need baby-sitters, and she's the lucky club member to watch Derek Masters, an eight-year-old on a hit TV sitcom.