Peter takes up smoking cigarettes, and is approached by Mr. Stone, an advertising executive who wants Peter to be the face of his anti-smoking campaign under the caveat that Peter continues to smoke. Meanwhile, Stewie helps Chris battle bullies at school.

When Peter takes Stewie to the park for some quality father-son time, he mistakenly takes the wrong baby home, prompting Lois to call him an idiot. Determined to prove to her that he's a responsible adult, Peter goes on a business trip to Chicago and returns as an intelligent, classy person.