When a fight breaks out among the members of the Baby-sitters Club, timid Mary Anne finds herself becoming more assertive as a babysitter and in her relationships with her father and friends.

Dawn, the newest member of the Baby-sitters Club, gets more than she bargained for when her first job turns into a disaster and she has problems with Kristy.

Stacey, a member of the Baby-sitters Club, struggles with her parents, who refuse to accept that she has diabetes, as she and the other girls in the club deal with baby-sitting problems and a rival baby-sitting club.

Claudia's participation in the Baby-sitters Club is curtailed when Grandmother Mimi suffers a stroke and Claudia finds herself "Mimi-sitting" and fighting more frequently with her sister.

While baby-sitting for practical joker Betsy Sobak, Claudia breaks her leg as a result of one of Betsy's pranks and wants to quit the club, prompting Kristy and the other baby-sitters to teach Betsy a lesson.

Follows the adventures of Kristy and the other members of the Baby-sitters Club as they deal with crank calls, uncontrollable two-year-olds, wild pets, and parents who do not always tell the truth.

Joining the Baby-sitter's Club after moving to a new town, Stacey helps her new friends outmaneuver a rival sitter group while coming to terms with her diabetes.

Accompanying the Pike family during a two-week vacation to the Jersey Shore, baby-sitter Stacey falls head over heels for a handsome lifeguard despite Mary Anne's warning that he is too old for her.

Convinced there is a ghost in her house, Dawn sets out to investigate the spooky noises and happenings in her home.

When her mother's remarriage takes her family into a much wealthier neighborhood, thirteen-year-old Kristy finds herself surrounded by snobbish girls who compare clothes, make fun of the Baby-sitters Club, and insult her aging dog.