When a broken ankle forces Marion to withdraw from the horse show, she finds a way to stay active by helping her friends at the Critter Club animal shelter find homes for a litter of kittens.

Amy so looks forward to meeting her future stepsister, Chloe, that she is not prepared when Chloe first ignores her than is downright mean.

Taking a turn caring for the class pet hamster, Marion is devastated when the hamster goes missing and she receives an anonymous letter in her locker with clues leading to a mysterious scavenger hunt.

"Ellie has always wanted to go to wedding, and her hopes finally come true when her cousin asks her to be a flower girl at her wedding. Then the Critter Club gets the cutest guest Ellie has ever seen: a little French bulldog. Ellie works hard to find a home for the puppy, but she's worried she won't be able to. Suddenly she has an idea that will guarantee that the puppy lives happily ever after!"-- Provided by publisher.

Read about best friends Amy, Ellie, Liz, and Marion who band together to form a rescue shelter to save lost and lonely animals in their town. Each girl has different personalities and interests, but they all have one thing in common: a serious love of animals. Together they help a group of kittens, a cute puppy, and some itsy-bitsy, baby mice. Join The Critter Club and fall in love with this fun flock of friends.

"Ellie prepares for her stage debut while she and the other girls try to keep a new kitty from wreaking havoc on their barn! Ellie is paired up with a classmate, Paul, on a special dance number for the school play. But right from the start, Paul gives her the cold shoulder! Will Ellie and Paul be able to patch things up in time to take the stage together? Meanwhile, Marion, Ellie, Liz, and Amy rescue an adorable kitten named Tiger--but he can't stop...

Members of the Critter Club are all excited about their summer plans until Liz learns that, instead of taking an art class, she will have to be in summer school to improve her math skills, but a fun teacher, a classroom pet, support from her friends, and advice from her brother might get her through.