One big (straight, gay, multi-cultural, traditional) happy family.
The Pritchett-Dunphy-Tucker clan is a wonderfully large and blended family. They give us an honest and often hilarious look into the sometimes warm, sometimes twisted, embrace of the modern family.
Phil and Claire are hurt when Alex lies about her college move-in date and Luke doesn't want to spend the day at Phil's open house; being landlords stresses out Mitch and Cam.