When Kristy Thomas's mother decides to get married again, Kristy and her friends in the Baby-sitters Club have to cope with all the small children that her family and friends are bringing to the wedding.

Amelia and her friend start a babysitting business.

Mayhem ensues in their sleepy California beach town when three best friends, motivated by unlimited snacks, no parents, and earning money for an epic seventh-grade party, find an old copy of "The Babysitters Club" and decide to start their own babysitting business.

"When other commitments threaten the success of the Best Babysitters Ever, Malia is frustrated until she comes up with a plan to hire new babysitters and take a cut of their wages." --

"David and Nathan are twin brothers who just can't seem to keep a babysitter around for long--they've had 347 after all. Or is it 734? Either way, there's got to be someone who can handle these two. Enter: Martin Healy Discount, or 'Murray Poopins' as the boys dub him"--

Ten-year-old Albie has never been the smartest, tallest, best at gym, greatest artist, or most musical in his class, as his parents keep reminding him, but new nanny Calista helps him uncover his strengths and take pride in himself.

"Hugh's anger boiled as he hurried down the gravel road. He was angry at Darielle for breaking up with Smokey; he was angry at Smokey for not telling him, and for not having the sense to adjust their plans when his girlfriend backed out. Most of all, he was angry at Amy for making a fool of him by running away. Smokey intended to use his gun on Amy, and Hugh would not stop him. When it was time to collect the money and go, they would leave Amy behind--but...

Malia, Dot, and Bree are psyched to land their highest paying job yet--until they get to the house and realize they're babysitting Zelda Hooper, Bree and Malia's archnemesis since preschool. Babysitting: not just for babies, apparently. And it's too much money to walk away from...so at least there are no diapers? But all of the babysitting in the world couldn't prepare the girls for their unusual new charge, and even though Zelda should be the one...

It's the first day of a new school year, and while Mary Anne doesn't know what to expect from the eighth grade, she's looking forward to getting back into the swing of things. One thing she definitely doesn't expect is to meet Logan Bruno, who just moved to Stoneybrook! Logan has a dreamy southern accent, he's awfully cute... and he might be interested in joining the BSC. But the baby-sitters aren't sure if Logan would make a good club member, so...