Gretchen explains the rules of the lunch table to Cady. The rules cover how each member of The Plastics should behave and dress on different days of the week. If an individual doesn't follow the rules, then that person will not be able to sit with The Plastics at lunch that day.

During detention, a group of high school students debate about motives behind participating in school clubs.

Rachel forces herself to look like she is a smoker so she could fit in with her boss and become a favorite.

Eddy decides to not follow the rules and tries to convince the other kids in the cul-de-sac that they don't need to either. Initially, they express fear and doubt, but soon they follow suit.

Eric visits Cory's class to give a talk on peer pressure. He shares that, next year when they move into seventh grade, there will be a large population of kids they have never met before who may think differently from them. Eric warns them that they may be pressured by their peers to make poor decisions.