Billy dreams that he is a special guest on a cooking show called "The Cast Iron Stomach" where he bakes cookies by blending junk food together. He is abruptly woken by Grim and then realizes that he did the same thing in his living room before passing out on the couch. Mandy reminds him that he's supposed to stay away from junk food just as he finds himself getting sick from all he's consumed.
Sophie discusses the types of nutrients found in junk food then lists out the different types of fat that exist in food: unsaturated, saturated, and trans.
Morgan talks to some health experts about the obesity epidemic in America and how fast food restaurants are a contributor to it. Lisa Young, a professor at New York University, illustrates how fast food companies have changed their portion sizes over time to make excessive amounts of food the norm.
Bill explains how to read the nutrition facts and interpret the list of ingredients on packaged foods. He explains the meaning of some of the numbers, such as the percent daily value.