After accidentally throwing the baseball into the window of a house next door, Brad Carbunkle sends his brother, Tuck to retrieve the ball, but he meets a robot girl named XJ-9 (She calls herself "Jenny") who gives him the baseball, scaring the pants off of him. Then, he tells his brother there's a robot inside, but he doesn't believe him. Jenny belongs to a scientist named Dr. Nora Wakeman, who wants her to save the world, but she meets Brad, sneaks out, and then hangs out, but Tuck is still afraid of 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.

Scorned by Tremorton after ruining the town's 300th anniversary celebrations during a fight with Vexus, Jenny gets fed up with being unappreciated by humans and soon finds herself in Cluster Prime, the capital of Vexus' empire. She finally gets a chance to live with other robots like her, but soon discovers there's more to Cluster Prime than meets the eye.

Rob Renzetti, creator of My Life as a Teenage Robot, demonstrates how to draw Jenny Wakeman (XJ-9).