Eva offers to babysit for little brother Baby Mo so her parents can go sky-dancing competition, and she enlists a couple of her friends to help--unfortunately Mo proves to be a handful, eating too much candy, making a big mess, and throwing a tantrum, and she and her friends have to clean up fast before her parents get home.

When her friends from the Baby-sitters Club come for a visit in NYC, Stacey realizes they feel out of place in the big city and must find a way to keep the weekend from becoming a complete disaster.

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. "Claudia's not worried when she hears her newest baby-sitting charge, Betsy Sobak, is a great practical joker. After all, how much harm can one little girl do? Plenty. Claudia breaks her leg as a result of one of Betsy's mean jokes ... and now...