Five Animorphs, otherwise regular teens, use special morphing powers to fight off an alien invasion by the Yeerks.

The Animorphs practice their new morphing powers, experiencing what it feels like to be a horse, a cat, and a rat.

The Animorphs pose as Controllers to investigate a new club called "The Sharing."

Rachel morphs into a cat to discover why her best friend is acting strange.

The weight of battling the Yeerk invasion is wearing on Jake. He wishes he'd never met Elfangor at all.

The Animorphs discover that the Yeerks are dying in the heads of many Controllers. They fight to save freed Controllers.

How will the Animorphs fend off a new breed of Yeerks that doesn't need a Kandrona to live?

The Animorphs try to stop a massive Yeerk infestation after obtaining new powers from the captured Yeerk disk.

Tobias, Rachel, and Marco must use all their wits to battle Visser Three and save Jake, Ax, and Cassie.

The Animorphs have a new classmate with superhuman abilities. Is he friend or foe? Human or alien?

Tobias follows a trail of hawk images to find a secret group that knows all about the Yeerks.

Ax gets a job in a gadget store to learn the value of money. But is his boss a Controller?