Harry is proposed to eighteen months after the death of his wife.
Carol gets all dolled up for a date with her contemptible ex-husband. Harry thinks Dreyfuss may be sick.
Harry tries to get Barbara to give up her police career after she is shot.
Neighbor Blanche thinks she is in love with Harry and comes on strong when showing her affection. An old friend of the family dies after an illness. Carol decides to move in and take care of her father.
Harry is ecstatic when Barbara accepts her surgeon boyfriend's marriage proposal, but she has second thoughts the night before the wedding.
Harry thinks he has become a burden on Carol and Barbara when they send him away on a vacation, despite his objections.
When husband Nick is traded to a Japanese baseball team, Laverne is forced to quit. A sick Charley camps out on Harry's couch.
Harry makes plans to accompany Carol to see her photographs displayed in an art gallery, and also to attend a ceremony honoring Barbara with a gold medal of valor. The problem is, both events are on the same day.
Harry isn't too happy when Carol begins dating his old friend.
An organ that Libby ordered before dying finally arrives at the house and Harry becomes determined to learn to play it in time for his and Libby's anniversary. Barbara and Carol worry that he is going too far. A patient asks Harry for birth control.
Harry is encouraged to spend a weekend alone with his girlfriend. Jeffrey Millstein's imagination runs wild after he sees a scary movie.
Financial trouble forces Barbara to move back in with Harry but it's not all fun and games. A lonely Carol soon decides to move in as well.
Harry doesn't understand why no one likes his new girlfriend, but soon realizes they were right. When the relationship ends, Carol, who actually liked the lady, questions her own instincts.
Carol falls in love with a South American freedom fighter and announces she's going away with him. Jeffrey Millstein falls in love with Laverne.
Carol becomes public relations director of the hospital and causes a multi-million dollar lawsuit when she reveals the mental problems of local celebrity Poko the Clown at a press conference. Charley convinces Barbara to pose as his fiance to get a promotion.
The Westons laugh when Charley says the full moon will bring love, but then realize he could be right. A rude doctor catches Harry's eye. Carol's finds romance when a man returns run-away Dreyfuss (who in turn finds love in the man's female dog). A stake-out leads Barbara into the arms of a high-school boyfriend.
Barbara falls in love with neighbor, Dorothy's nephew, but is surprisingly not phased when he dumps her. Dorothy and Harry have an argument when Dorothy blames Barbara for the breakup.
The hospital's new owner forces Harry to move his practice after 25 years in the same office. Meanwhile, Carol tries to amend the past after reading Emily's old diary and Charley tries out a new look.
When Harry receives a Man of the Year award, his estranged father comes to town for the ceremony, but Harry gets upset when he learns that his father didn't think he could make it as a doctor. Carol overhears the conversation and thinks her grandfather is dying.
Harry gives Charley advice on how to impress a new girlfriend, who turns out to be the same lady Harry is seeing. When a relative dies and leaves Barbara and Emily money, Carol is anxious to see what she'll be getting but isn't too thrilled when it arrives.
Harry promises to take Carol and Barbara with him to Paris if the two can go one month without fighting. Charley wins a greyhound in a card game.
Harry sees five patients: a week-old baby, a five-year-old whose father denies the boy's onset diabetes; a seven-year-old curious about sex; an eleven-year-old having the cast removed from his arm; a belligerent 14-year-old who uses drugs; and an 18-year-old picking up his medical records before going away to college. The end of the episode reveals that all of these have been the same patient at different ages.