Life’s good for deliveryman Doug Heffernan, until his newly widowed father-in-law, Arthur, moves in with him and his wife Carrie. Doug is no longer the king of his domain, and instead of having a big screen television in his recently renovated basement, he now has a crazy old man.
Arthur is moved upstairs to Carrie's office once the weather gets cold, but have problems when the weather warms up and Arthur thinks his move was permanent.
Doug and Carrie make new friends, and by a scheduling mix-up the new friends, and Deacon and Kelly end are invited to the same dinner party. And in the end, they have no friends.