
Doug Heffernan puts in a long day's work delivering parcels and comes home each night to his loving wife, Carrie; unfortunately, he also comes home to his wacko father-in-law, Arthur.

Carrie befriends her annoying neighbors so that their week at a Hamptons time-share does not go unused; Arthur develops a nasty rash.

Doug convinces cousin Danny (Gary Valentine) to take Arthur for the weekend; Doug is hit by a baseball and meets a new friend (Bill Cosby) at Dr. Becker's (Ted Danson) office.

Arthur moves into his own apartment after Doug tells him how he feels about his eccentric behavior; Carrie is concerned that her father can't take care of himself.

A visit with Deacon's three-year-old son prompts Doug and Carrie think about having a baby; Arthur recalls the night Carrie was born.