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.

After a close call in the Yeerk Pool, the Animorphs decide to split up and gather more information.

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

Cassie discovers Ax, an injured Andalite, has crashed on the earth. Can Ax trust the Animorphs?

The Animorphs have discovered a secret weapon to use against the Yeerks: maple-flavored oatmeal!

The homesick Ax uses a high-powered telescope to contact his father.

The Animorphs must infiltrate a new health clinic and stop the Yeerks before the governor is infected!

Jake is acting pretty normal after falling into a Yeerk pool. The Animorphs keep Jake under close watch.

Cassie has an allergic reaction to a crocodile's DNA and has trouble controlling when she morphs.

An omniscient alien shows the Animorphs the probable future: the complete Yeerk domination of the earth.

Rachel crashes in the woods while in hawk morph. The Animorphs rescue her from the Controllers.

The Animorphs discover a terrible secret about Visser One and Marco's mother.

The Animorphs destroy a Kandrona. Marco vows to fight the Yeerks until he gets his mother back.

Tobias and Ax share memories with the help of Andalite technology.

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.