Kim desperately wants a car, and her father finally gives her…an old beater, which the Tweebs trick out just in time to help stop Motor Ed and Shego who've stolen an experimental rocket.

Ron goes on an all Bueno Nacho diet to prove that the Food Pyramid is a horrible heath conspiracy, but when he starts to grow too big for his britches (literally!), Kim thinks it may be time for him to admit defeat. During a mission, Ron falls into a vat of serum that slowly changes him into a 15 foot behemoth and the only way to stop him is for Kim and the Tweebs to trick him into eating healthy food from the Food Pyramid!