There is a cuckoo in the nest as Chris's best friend, Gavin comes to stay after his marriage break-up. Chris's desire for a peaceful life has to be put on hold as his rich, successful playboy friend needs a helping hand.
Chris and Fliss continue to try and get Gavin to move out, but when he brings in a new color television, Chris begins to think he's not so bad.
Fliss complains about the cost of living, she can't feed three as cheaply as two, so Gavin gives her a very generous contribution. When Chris demands part of it he finds himself locked out.
It's Fliss and Chris's wedding anniversary, but Chris finds he has to work covering a football match. So Fliss unhappily goes along too.
It's Chris's day off, but his and Fliss's plans are ruined when Gavin turns up from work ill. Dr MacKenzie is called and thinks there's not really that much wrong with him. Having had enough, Fliss goes to her mom's and leaves them to it.
Gavin gets a promotion. Chris wants to go down to Fleet Street for work, while Connie introduces Fliss to Tarot cards. Chris and Fliss go for a reading with Madame Stellaris, followed by a trip to London.
Gavin announces that Carol wants to sell their house. She asks Chris a favor - will he show some prospective buyers around. It goes alarmingly well, despite his best efforts. Then there's the Selling Up party.
Fliss and Connie are off to watch a 'disgusting' movie, and with Chris playing football they need a babysitter. Step in Gavin's new office temp - the gorgeous Harriet. She doesn't realize that Gavin is also part of the household though,
Connie advises Fliss on ways to get Chris to buy her a new washing machine - they can't really afford it. Gavin meanwhile has bought a new car - a De Tomaso Pantera.
Fliss wins £117.10 on the football pools, but how will she and Chris spend it? Eventually, they agree to go to Blackpool for a break.
After being burgled, Connie goes around to Fliss and Chris for some tea and sympathy. Gavin gets talked into letting her stay in his room. After a chat with Gavin, Mr Tweedale decides to propose to Connie.
Gavin wants to go out with a model, so he asks Chris to get her picture in his paper. Fliss starts working as Gavin's secretary & is invited to lunch with a client, and goes to the same restaurant as Chris and the model.
Gavin has a letter from Carol. She's asking for a divorce. As a result Gavin decides it's time to move on, but first he wants to put on a dinner party.
One of Gavin's holiday romances catches up with him when Arianna turns up on the doorstep, quickly followed by her very annoyed brother who's out to kill him.
Gavin has bought a new Super 8 movie camera, and is anxious to show it off. Fliss wants Chris to take her and the kids out as a family, as it's been ages. They go to 'Belle Vue' - all on £2.60.
Gavin tries to chat up an air hostess. When he finally succeeds, he needs someone to make up a foursome. As he's no friends, Gavin thinks of Chris, who then lies to Fliss as to where he's going.
Gavin has spent over two weeks staying in. He doesn't even want to play Strip Lexicon. Has he lost his interest in girls? Fliss tries to change his mind.
Jill, a friend of Fliss's pays a visit. She's young, sexy and successful and makes Fliss think about her life. Jill persuades Fliss to go to a literary party in her place, where she meets a bit of rough.
Chris and Fliss feel envious at Gavin's constant spending. He's bought a special bed, and new wallpaper. Gavin says that they can have his old bed, though there's a catch - he wants them to do the wallpapering!