1. My Name Is Jake (1)  

First aired: 9/15/1998    Production Code: 101

Sometimes weird things happen to people. Ask Jake. He might tell you about the night he and his friends saw the strange light in the sky. He may even tell you what happened when they realized the "light" was only a plane... from another planet. Here's where Jake's story gets a little weird. It's where they're told that the human race is under attack, and given the chance to fight back. Now Jake, Rachel, Cassie, Tobias, and Marco have the power to morph into any animal they choose. And they must use that power to outsmart an evil greater than anything that world has ever seen...

2. My Name Is Jake (2)  

First aired: 9/15/1998    Production Code: 102

Sometimes weird things happen to people. Ask Jake. He might tell you about the night he and his friends saw the strange light in the sky. He may even tell you what happened when they realized the "light" was only a plane... from another planet. Here's where Jake's story gets a little weird. It's where they're told that the human race is under attack, and given the chance to fight back. Now Jake, Rachel, Cassie, Tobias, and Marco have the power to morph into any animal they choose. And they must use that power to outsmart an evil greater than anything that world has ever seen...

3. Underground  

First aired: 9/22/1998    Production Code: 103

The Animorphs try out the disk, but nothing happens. Jake and Marco realize that someone very close to Jake is a Controller. The Controller turns out to be Jake's brother, Tom. Jake wants his brother back, and he'll do anything to do it. They tried morphing out into ferocious animals from the clinic that Cassie's mother works in. Jake acquires a tiger and Rachel acquires a lion. They use it to try and free all of the humans in the Yeerk Pool located under the school. Their attempt ended with no free humans, without Tom, Tobias was gone (probably captured by the Yeerks), and the disk was lost.

4. On the Run  

First aired: 9/29/1998    Production Code: 104

The Andalite disk is still lost and the Yeerks wish to barter for it: they will trade the disk for an Andalite. Jake and Marco trick a Controller into capturing an actual animal, and think they've gotten away with the disk clean. Meanwhile, the Sharing moves forward with its plans to harvest more Controllers, and the compromise over the disk turns out to be a trap. Hopefully, the Animorphs will be able to outsmart the Controllers.

5. Between Friends  

First aired: 10/6/1998    Production Code: 105

It is now certain that Tobias is stuck in morph. Rachel decides to rescue Melissa Chapman, who is about to be infested by the Yeerks. However, her father is an important controller himself, and Rachel is caught in cat morph and taken to Visser Three. The Animorphs have to rescue Rachel and make a decision to not endanger themselves recklessly.

6. The Message  

First aired: 10/13/1998    Production Code: 106

Cassie and Tobias suspect another Andalite on Earth, as a different thought-speak has contacted them, as well as Visser Three. It's a race between the Animorphs and the Yeerks to claim the Andalite.

7. The Escape  

First aired: 10/20/1998    Production Code: 107

The Animorphs discover that a certain type of oatmeal is a stimulant to the Yeerks, and they are unable to crontrol their hosts' actions. However, the usage of this "drug" also affects the hosts, but the Animorphs know they must use this advantage to inflict some serious damage upon the Yeerk pool.

8. The Alien  

First aired: 10/27/1998    Production Code: 108

Ax, seeming foreign to his new surroundings, tries to fit in with his new friends. After making the grave mistake of giving technology to humans, he must fix his error by Andalite law and defeat Visser Three... alone.

9. The Capture (1)  

First aired: 11/3/1998    Production Code: 112

Jake's father is almost ready to open the Health Wellness Center, a division of the hospital he works at. At dinner, Jake found out that Victor Trent (also known as Visser Three) is a partner of his dad's in the creation of the health clinic.

Jake went to help his dad, there were a lot of security, but he had to leave. The Animorphs investigate why they had lots of security - the infestation of the governor, Ax scans Marco's video card to respond to all human codes. The Animorphs enter the building as roaches, and searches for the Yeerk Pool. Once they found it, they destroyed the Yeerk Pool in a room and Jake falls into the pool. The Animorphs did not know that Jake was a Controller when they left.

10. The Capture (2)  

First aired: 11/10/1998    Production Code: 113

After the Animorphs successfully fried the Yeerk pool, Ax alerts the group that Jake was made into a Controller. The Animorphs now tie Jake up for three days to starve the Yeerk of Kandrona Rays. Jake and the Yeerk go at it mentally to see who was the greatest will. Also, the other Animorphs have to keep "Jake" from using his morphing powers to escape.

11. The Reaction  

First aired: 11/17/1998    Production Code: 109

After Cassie and Rachel save a boy from a crocodile pit, Cassie begins to lose control of her morphing ability, the result of an allergic reaction to the crocodile DNA. Meanwhile, Cassie has been invited to the Larry and Linda Show where the famous star, Jason Jon McCole is also a guest talking about The Sharing. The Animorphs must find a way to stop Jason Jon McCole before millions of rabid female JJM fans decide to join The Sharing.

12. The Stranger  

First aired: 11/24/1998    Production Code: 110

While Rachel is struggling to decide if she wants to move away with her father, Visser Three sets a cunning trap. He captures Ax and lures in the rest of the Animorphs. When it all looks hopeless, a mystical figure, the Ellimist, offers the Animorphs a dangerous choice.

13. The Forgotten  

First aired: 12/1/1998    Production Code: 111

Rachel's amnesia causes her to forget everything she knows, including everything about being an Animorph, and the battle against the Yeerks. She unknowingly wanders into a human-Controller infested area and is about to be taken by the Yeerks. Marco, Jake, and Cassie have to not only save her, but restore her memory.

14. The Leader (1)  

First aired: 1/5/1999    Production Code: 116

Jake finds out Visser One will be at the EGS Tower, where the Yeerk Kandrona is located. Now all the Animorphs need to do is find a way to get in and destroy it. While spying on the Yeerks, a Morphing Detector causes Jake and Marco to be captured in a spacecraft en route for the Yeerk Mother Ship. When Jake and Marco escape and search for a way off the ship, they discover a startling secret; Marco's mom is alive, controlled by Visser One.

15. The Leader (2)  

First aired: 1/12/1999    Production Code: 117

Cassie and Rachel break the Kandrona and return to the barn where Ax was, while Jake was still trying to find a way to escape the pool ship, but Marco did not want to just leave his mother behind now that he found out she's alive. But they can't stay and risk being caught, so they had no choice. So, they decided to hijack a Yeerk blade ship.

Rachel and Cassie use Ax to help guide Jake and Marco back to earth. Jake and Marco safely got back to Earth, but now a new enemy has been revealed.

16. Tobias  

First aired: 1/19/1999    Production Code: 114

Ax has created a device that allows an individual to relive their most cherished memories. Tobias uses it to relive his pre-Animorph life. He relives meeting Rachel and first acquiring animal DNA. Likewise, Ax gets a taste of reliving his days. Tobias remembers how awkward Ax was at first when he became human.

17. Not My Problem  

First aired: 1/26/1999    Production Code: 115

Jake wishes that he had never met Elfangor. Unforunately, the Ellimist is listening and grants his wish. All of the Animorphs never met the Andalite prince, except Tobias, who stumbled upon him. Soon, all of the former Animorphs except Tobias become infested by the Yeerks. Tobias will have to carefully plot his move so he won't be next.

18. The Release  

First aired: 2/2/1999    Production Code: 118

The Animorphs find out that the Yeerks don't have enough Kandrona Rays for a lot of Controllers so there are a lot of Controllers that are sick like Tom, Yeerks are dying from lack of Kandrona Rays. One of them happens to be the Yeerk who controls science teacher Mr. Perkins. Now, Mr. Perkins is on a crusade to free other Controllers.

Jake and Marco try to rescue Tom but they find out that Mr. Perkins (Teacher) is a free Controller, and is also trying to free Tom, but Tom escapes. He gathers up some Controllers and look for Mr. Perkins, but fortunately, Jake as a Tiger and Marco as a Wolf scares away all the Controllers and save Mr. Perkins.

Jake looked for Mr. Perkins at the camping site, and discussed how they will help each other out.

19. Face Off (1)  

First aired: 2/9/1999    Production Code: 119

At the basketball final, the Animorphs discover that all of their enemies will be in one place, so they must be cunning in their tactics. However, a plan goes horribly wrong as Jake is trapped. The Animorphs must now split up to find the disk and free Jake!

20. Face Off (2)  

First aired: 2/16/1999    Production Code: 120

The Animorphs are separated from each other with enemies everywhere. Rachel may have saved Tobias, but Jake is still in Tom's clutches. The remaining Animorphs are close to being infested by the Yeerks. While dodging Yeerks, they have to rescue Jake as well.