Commander Smytus has actually succeeded in assimilating Jenny into the Cluster, and has turned her into a massive metal monster. Having been awakened due to Jenny being in crisis, the rest of the XJ line have come to save their captive sister.

When Tuck takes a look into Dr. Wakeman's "Future Scope" and sees a vision which leads him to believe that Jenny will kill Brad, he takes all costs to stop Brad from leaving for a drive-in movie showing.

The Teen Team has come to Earth, and they are quite impressed with Jenny's abilities. Jenny seems more than excited to join, but finds herself ignoring her other friends in favor of a group of heroes that are mostly prejudiced against "normal people".

Jenny really wants a popular music player called the "Musique," but it's very expensive. So Jenny tries another method: shoplifting!

If Tuck doesn't pass his next assignment, he's going to wind up repeating the second grade. His assignment: a project on his personal hero. His subject: Jenny. His project: create a movie centering on Jenny's life. His personality: too enthusiastic for anyone to stand. Along with a generous amount of creative license.

When Jenny saves local school geek Sheldon from a gang of bullies, he quickly becomes smitten with her and does not want to leave her alone.

A simple snowball battle between Jenny, Brad, and Tuck is interrupted by a strange robot ambassador who wants to make Jenny the newest member of the Cluster, a legion of robots headquartered on the planet Cluster Prime that plans to enslave humans for manual labor. When she refuses, the ambassador commences war against her.

Jenny is unwittingly programmed for evil against her will by a spoiled child named Todd Sweeney, who uses her to ruin the holidays for all of Tremorton. When she returns to normal, she discovers that the entire town has turned against her, and nobody believes her pleas of innocence, except for the one person that worships her like a goddess - Sheldon. Todd, however, still intends to use her to ruin the year's biggest holiday—Christmas.

After a group of runaway living fruits and vegetables is stopped by Jenny, a jealous Skyway Patrol lieutenant seeks to permanently shut her down.

Having vowed revenge on her for all the injustices placed upon them, Dr. Wakeman's mutant lab rats, led by the evil genius Vladimir, also known as Mr. Scruffles, plan to destroy her by taking control of Jenny's body.

Jenny and Brad's secret party is a hit, but between keeping the party-goers under control, keeping the house in one piece, and keeping a group of tiny multiplying aliens from invading Earth, Jenny has her hands full.

The owner of Mezmer's, a popular hangout spot for teens all over town, enforces a strict "No Robots" policy. Desperate to get in, Jenny dons the new and improved exo-skin to pass off as a glamorous human teenage girl. However, the exo-skin turns out to have a mind of its own and refuses to let Jenny take it off or fight a group of alien space bikers.

Dr. Wakeman is coming to Tremorton High to speak at a special science assembly about Jenny. Fearing humiliation, Jenny tries to prevent her mother from talking at the assembly.

Armagedroid—once a powerful global protector programmed to disarm and destroy all weapons before he went rogue—returns to Tremorton, and Jenny finds herself unable to stop such a huge robot.

Killgore, a small wind-up robot, hopes to kidnap Jenny in hopes of impressing the Cluster, but no one can resist his unintentionally cutesy appearance.

A group of aliens worship Jenny after she is mistaken for a "comet goddess". It's fun at first but they soon drive Jenny crazy. However, when confronted, the aliens promise to leave her alone after one last ceremony. Jenny unwittingly pulls the Sun towards the Earth, and uses the same ceremony the opposite direction. She then hurls the alien's spaceship into an elliptical orbit around the sun, turning them into a comet. The Earth is saved, but someone's missing...

Melody returns to Tremorton, and Brad begins spending more time with her. Is Jenny merely getting jealous, or is Melody more of a dischord than she seems?

After Nora's electrics address filer goes on the fritz, Jenny invites her distant aunt over to visit, but quickly learns that she and her sister Nora Wakeman don't quite see eye to eye.

Sheldon is recruited to become a sort of secret agent, and stumbles onto a supposed plot to destroy every last robot in Tremorton.

The Space Bikers have managed to rebuild Jenny into a motorcycle, and now she and Tuck are en route to their hideout to demand them to change her back!

On her first day of high school, Jenny seeks to make some new friends, and she thinks she can find some in the arrogant Brit and Tiff Crust. Unfortunately, the Crust cousins do not share the same feelings and plan to humiliate her.

Jenny wants to get ear piercings, but her mother refuses to give her ears. Sheldon offers to step in and help, but the ears he builds end up being disproportionately large on Jenny's head.

While on a mission in Japan, Jenny winds up losing one of her language system discs for English speech. Unable to switch off from speaking in full Japanese, she encounters problems in speaking to people. She uses this to her advantage, however, to make peace with a Japanese creature that grows with and is hurt by water.

Crackerjack Cluster inventor Krackus has managed to scatter Jenny's parts all over the world, and Brad, Tuck, and Sheldon must put their friend back together before Krackus can call Vexus on his success.

With Misty hanging in Tremorton and doing her part in keeping the town safe (though not for free), Jenny decides to leave the superheroics to her and starts to slack off. But when Misty's mercenary habits clash with Jenny's views on protecting the innocent, fisticuffs break out between the two. What's going to become of their friendship?