Grandpa Lou takes over Stu's job of chaperone for the class field trip to the Human Body museum, and starts to embarrass Tommy. Meanwhile, Dil is hospitalized for a throat infection.

When Chuckie's biggest competition in the election for School Safety Commissioner is Dil's imaginary alien friend Izzy, you would think he would have it in the bag, right? WRONG! When Izzy becomes more popular than Chuckie, can he even rely on his friends to help him win?