- Aired: Feb. 7, 1999
- Writers: Jessica Scott & Mike Wollaeger
- Director: Shawn Levy
The Animorphs discover a second Kandrona and set out to destroy it, but Jake and Marco are caught with the Yeerk's new morph-detecting devices and sent into space aboard the Yeerk mother ship. On the ship Jake and Marco uncover some shocking secrets.
Jake finds out Visser One will be at the EGS Tower, where the Yeerk Kandrona ray generator is located. When Jake and Marco are captured while spying on the Yeerks and brought on board their spaceship, their escape is hindered when they discover Visser One's Controller is Marco's missing mother.
|Jake||Horse (off-screen), Tiger (off-screen), Golden Retriever (Homer), Skink, Cockroach|
Back on earth, Cassie and Rachel destroy the Kandrona. Marco and Jake make a daring escape from the mother ship with the help of Ax and the other Animorphs. Marco has a new reason to fight the Yeerks.
Now that Marco has found his mother again, he is reluctant to leave the Yeerk ship without her. Cassie and Rachel destroy the Kandrona ray generator while Ax must devise a way to bring Jake and Marco back to Earth. Meanwhile, their actions have revealed the existence of a new enemy.
|Cassie||Mouse (Off Screen)|
- Part 3: The Enemy Among Us ("The Stranger", "The Leader" parts 1 and 2)
- Volume 5 ("The Forgotten", "The Leader" parts 1 and 2)
|Season 1||My Name is Jake | Underground | On the Run | Between Friends | The Message | The Escape | The Alien | The Reaction | The Stranger | The Forgotten | The Capture | The Leader | Tobias | Not My Problem | The Release | Face Off Parts 1 and 2|
|Season 2||Face Off Part 3 | My Name is Erek | Changes | The Front|