Dr. Mac has brought Brenna, Maggie, and Zoe to Florida to visit her friend Gretchen, a marine biologist who runs a manatee rescue center that’s in desperate need of money. Brenna’s immediately drawn to the endangered, gentle giants, and wants to do whatever she can to help them—and the center. But is she causing trouble where she wants to help?

Yum-Yum is an adorable shih tzu and one of Zoe’s favorite clients. When Zoe and Yum-Yum visit a ward of cancer patients, she is amazed by how much joy the tiny dog can spread in an instant. But then Yum-Yum is diagnosed with cancer himself. How can Zoe help the little dog pull through?

Maggie's still getting used to middle school. One of her teachers is, too - Mr. Carlson, her new science teacher, is blind, and is working with a guide dog for the first time. Scout is a love of a German shepherd and really wants to do his job, but Maggie can tell that Mr. Carlson's still having a hard time. Maybe she can help. . . .

Sunita has always wanted a cat, but her parents are dead set against it. Then she finds a group of strays living in the wild, and knows she can domesticate them—even though she’s been told that these are feral cats, who see humans as their enemies. First, she convinces Dr. Mac to examine the cats, fix them, and give them shots. Then she wants to re-release the cats, now healthy, into the neighborhood. The problem is, the neighbors...

Jules and Josh are so excited when their parents hire ponies to attract customers to their sidewalk sale. But the Vet Volunteers notice that the ponies don't seem to be very healthy, and after an examination, they learn that the handler, Gus, has been mistreating them. Can the Vet Volunteers help the ponies get well and find a better life for them?

When the Vet Volunteers find some abandoned ducklings, they know there's no time to lose. Without a mother, the ducklings must learn to swim on their own. But where did they come from? When Brenna and the rest of the Volunteers learn that the ducklings are abandoned Easter pets, they hatch a plan to educate their community about baby animals—but they also must teach the ducklings to swim before it's too late.

David is determined to learn to jump on horseback if it kills him. And sometimes he's afraid it might, like when Comet balks and won't go over the crossbar. Now that David's father is back in town, he's promised to teach David how to jump like a champion. But David can't let him know how scared he is. Because there's one thing that scares David more than falling off a horse, and that's disappointing his father. Can he overcome his fear, or even talk...

A memoir in verse shares the author's life, covering her rape at thirteen, her difficult early childhood, and her experiences surrounding her publication of "Speak."

When her owner dies at the start of the Revolution, a greedy nephew keeps Isabel and her younger sister enslaved and sells them to Loyalists in New York, where Isabel is offered the chance to spy for the Patriots.