Kim accidently turns Ron into a selfish jerk with a new haircut, all while two new villians begin their new evil hobby.

When Animology sweeps over the school, Kim tries to avoid it, but she gives into the fad. Meanwhile, the Seniors start their most dangerous plot to date.

When Señor Senior Sr. becomes disappointed in the way his son’s villainy is handled, he decides to hire a tutor to ensure his son’s success; which turns out to be Shego. Meanwhile, a hopeless Kim is stuck on Home Economics with Ron but when Ron becomes an expert chef while Kim can’t cook a single thing, Ron is chosen to help Kim out. Can Kim overcome her predicament or is this one sitch that she cannot escape from?

When Señor Senior Junior breaks Shego out of prison to help him get his father a great birthday present, it's up to Kim and Ron to stop them. Meanwhile, Kim urges Ron to get a job after he uses coupons on their date.

Ron offers Wade advice on how to woo Monique, but when it backfires, the young supergenius creates a Cupid Ray. Unfortunately, the device falls into the hands of Senor Senior Senior, who uses it to help Junior seduce all the women in the world.