Brad and Tuck discover there's something very different about the girl next door. She is the super-powered Global Robotic Response Unit model #XJ9 but she likes her friends to call her "Jenny".

Dr. Wakeman's mutant lab rats, led by the evil genius Vladimir, vow revenge on their creator by by trying to take control of Jenny's body.

Jenny wants to go to the annual Townsquare Fair, but Wakeman is worried that someone in such a large crowd is bound to panic when they see a seven-foot mechanical teenager.

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

Jenny makes a fan for life when she saves Sheldon from the shop class bullies. Jenny's happy to have another friend, but his instant devotion creeps her out.

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.

Tiffany Crust has just gotten her left ear pierced for the third time and this makes pierced ears the hot topic of the day.

Brad is disappointed by his lack of a driver's license, and Jenny's attempts to help him. Soon, he takes up joyriding in abandoned UFOs as a new hobby.