Lately, the pressure's really been on Stacey. She hasn't been feeling well, her schoolwork and baby-sitting jobs are almost out of control, and she's sick of being in the middle of her parents' fights. Then it happens: Stacey ends up in the hospital because of her diabetes. The baby-sitters are worried. So is Stacey. Why are things always so hard?

The baby-sitters just love little babies. So of course Kristy has the great idea of entering a float in the Stoneybrook Baby Parade. All the girls have to do is round up a bunch of adorable babies like Squirt and Emily Michelle, dress them in costumes, and plop them on a float. Easy, right? Wrong. The float looks like a big orange blob, the costumes are hideous, and the babies won't stop crying. S.O.S. - the baby-sitters' float is about to sink!

For once, Claudia's studied really hard for her math test. And when she gets her paper back, it has an A- on it. All right! But then Claudia's math teacher calls her to his desk and accuses her of copying off of Shawna Riverson's test. Claudia can't believe it, and neither can the baby-sitters. Claudia would never cheat! And they're not going to rest until they help clear Claudia's name!

It was good for Mary Anne and Logan to break up for a while. Mary Anne had some time to herself, and she's been having lots of fun with her friends. But now Mary Anne can't help it. She misses Logan. When she and Logan are both assigned to study their favorite author, Mary Anne thinks it will be the perfect, most romantic way for them to get back together. Until Cokie Mason, Mary Anne's mortal enemy, decides to steal Logan from her!

Lately, Mary Anne's been feeling like she and Logan are spending too much time together. They fight over silly things. And Mary Anne never gets to do what she wants to do - like read, and baby-sit, and be with her friends. But when Mary Anne suggests that she and Logan see less of each other, Logan takes it all the wrong way. Could this really be the end for Mary Anne and Logan?

There's some bad news in the Pike family: Mallory's dad has just lost his job. And since money is going to be tight until Mr. Pike finds a new job, all eight of the Pike kids decide to help out. Nicky gets a paper route, Vanessa tries selling her poetry, and Mallory takes a baby-sitting job in Kristy's ritzy neighborhood. But being around the Delaneys only makes Mallory feel poor. They have a cat that cost $400 and tennis courts in their backyard! Poor Mallory - she needs the Baby-sitters now more than ever!

There's always someone to do things with, and she likes to help take care of her younger brothers and sisters. But now Mallory's working on an important writing project, and she needs peace and quiet. So why won't everyone leave her alone? Nicky needs help tying his shoes, Claire wants a sandwich, someone has to break up the triplets' fight, and Mallory feels like a full-time baby-sitter. And there's only one thing to do: This baby-sitter is going on strike!

Of all the babysitters, Kristy's the last one anyone would expect to have a secret admirer. But someone is sending her mushy notes with hearts all over them. 

Dawn has met Travis, an older boy, and she knows he's the perfect boy for her. But the baby-sitters think that smooth-talking Travis is no good and plan to tell Dawn just that.

Little Rosie Wilder is perfect at everything. She can sing and dance, she plays several musical instruments, and her IQ is so high it's off the scale. So how did Claudia "C-" Kishi get stuck baby-sitting for Rosie the genius? It's because Rosie is so obnoxious that no one gets along with her - not even Claudia's sister, who's a genius, too. The baby-sitters think that Rosie needs to be taught a good lesson. But maybe what Rosie really needs is a good friend...like Claudia. 

When Jessi volunteers to help supervise the Kids Can Do Anything Club, she meets nine-year-old Danielle. Danielle has a beautiful smile and a great sense of humor. And she has cancer. Jessi has never met anyone like Danielle before. Even though she's very sick, Danielle is courageous and hopeful. She even has two wishes. The first is to go to Disney World. The second is to graduate from elementary school. Jessi knows she has to be strong for Danielle, and so she makes a very special wish of her own.

Stacey can't wait! Her best friend from New York, Laine Cummings, is coming to Stoneybrook for a whole week. She can spend a day at SMS, attend club meetings, and maybe go to the Valentine Dance. But from the minute Laine arrives, nothing goes as planned. She thinks Stacey's sleepover with her friends is childish, and can't believe Stacey's still into baby-sitting. Laine's more used to hanging out at high school parties with her 15-year-old boyfriend.

Dawn and Mary Anne are finally stepsisters and also roommates. When they begin to get on each other's nerves, Dawn comes up with a solution which pleases everyone. 

Mary Anne and Stacey are in Sea City working as mother's helpers for the Pike family. When each of the girls meets up with her boyfriend from last summer, things start to get complicated.

Claudia, who has always been very different from her sister, comes to the conclusion that she must be adopted.