After battling off a group of Cluster Drones, Jenny faces off with Vexus. While Jenny tries to make her heroic speech, Vexus dismisses everything she says and manages to escape by gassing Jenny with a cloud of green gas. As Jenny coughs on the cloud of gas, a small robot finds its way inside of her and proceeds to bite Jenny in her innards. Jenny, unaware that the robot is inside of her, rockets off to school. In class, Brad reminds Jenny that Picture Day is tomorrow and informs her that he wishes to be zit-free for his photo, bringing Jenny to mention that she never has to worry about breaking out. Just then, a bolt appears on her forehead, acting as a robotic "zit". She then screams, and blasts through the roof.

Back at home, Jenny attempts to remove the bolt from her head by unscrewing it. It then reappears, larger than before. When Brad and Tuck come to visit, Brad concludes that the bolt is a sign of Jenny undergoing "robo-puberty." Tuck, however, says that bolt is the first sign of some sort of infection from a tiny alien machine, and that the infection will turn Jenny into a monster. As Brad dismisses Tuck's outlandish claims, more bolts emerge on Jenny's head. Brad then offers Jenny some coverup to hide the bolts.