Doug Heffernan, chauffeur-livreur, et son épouse Carrie, secrétaire dans un cabinet d'avocats, mènent une vie paisible dans le Queens (quartier de New York) jusqu'au jour où l'excentrique père de Carrie vient s'installer chez eux…
Carrie thinks Doug needs professional help to control his excessive eating habits, so she persuades him to see a therapist. When Carrie sees Doug's great inprovements, she asks the therapist to work on Doug's other issues. Meanwhile, Arthur believes he's addicted to nasal spray and fights to stay off of it.