Stacey is so excited! Her friends from The Baby-sitters Club are coming to New York City for a long weekend. It's going to be perfect: a party and a sleepover on Friday night, a big baby-sitting job on Saturday, and lots of sightseeing throughout.

But it turns out that the baby-sitters are way out of place in the big city. Mary Anne sounds like a walking guidebook, Dawn is afraid of everything, Kristy can't keep her mouth shut, Claudia is jealous of Laine - Stacey's New York best friend - and Mallory and Jessi feel intimidated by Stacey's classmates. With ten kids to baby-sit and a full schedule of activities, how will Stacey keep the weekend from becoming a complete disaster?