Ivan has been happily living in a wildlife sanctuary, with his friend Ruby next door in the elephant enclosure, frequent visits from his canine friend Bob, and his mate Kinyani by his side. And in the happiest turn of all, Ivan and Kinyani have welcomed a set of twins to their family!

Tobias and the other Animorphs discover that the Yeerks, a parasitic alien race bent on enslaving Earth, plan to test a device that could put an end to the Animorphs' fight against the Yeerks.

Rachel, one of a group of young people who have been given the power to change into an animal in order to fight an invasion by the alien Yeerks, worries that her secret power will be revealed when she loses control of her morphing abilities.

Ax and the Animorphs flee the Yeerks, who seek to find the blue cube that gives the kids the ability to morph.

The Yeerk that controls Jake's brother Tom is desperate to keep Tom from going with the family to his great-grandfather's funeral, even if he has to kill Jake's father.

Tobias, trapped in animal form after morphing into a hawk, agrees to help save two Hork-Bajir from the evil Yeerks in exchange for his humanity.

Endowed by a dying alien with the power to morph into any animal they touch, friends Jake, Rachel, Cassie, Tobias, and Marco investigate the wonders of the world with their unusual powers.

Kek, an African refugee, is confronted by many strange things at the Minneapolis home of his aunt and cousin, as well as in his fifth grade classroom, and longs for his missing mother, but finds comfort in the company of a cow and her owner.

"Jake, Rachel, Tobias, Cassie, and Marco have a feeling they know where the Yeerk's new base is located. And they've even figured out how to get in -- how many people will really notice a few flies on the wall? But they never figured that they might get caught. Or that Jake could fall into the Yeerk pool. That Jake could become a human-Controller..."--Cover.

There's something pretty weird going on in the woods behind Cassie's house, the place where Ax and Tobias call home. It seems the Yeerks have figured out one very important fact: Andalites cannot survive without a feeding ground. Visser Three knows the "Andalite bandits" don't feed where he does, so there can only be one other place.Now the Animorphs have to figure out a way to stop a bogus logging operation. Because if Visser Three finds Ax in the...