Larry decides to use Chrissy's cine camera and projector for a 'special' type of film...

It's the day before Norman and Chrissy's wedding and Mildred is upset that she has not received an invitation...

Robin, Chrissy, and Jo are cleaning the Ropers' garden. They discover a plant and decide to keep it, that is until Larry identifies it as cannabis...

George has a hard time getting the piano he sold to Robin upstairs.

Chrissy gets some tickets to see Frank Sinatra in concert - she doesn't want them, but Jo and Robin certainly do! Also, it is George and Mildred's anniversary.

Robin and Chrissy's party is cancelled by George, which leads to a dispute. It gets so bad that Mildred finally leaves him. Can George get Mildred back?

George needs some money so he sells Mildred's sun lamp to Larry, who sells it to Robin. Later, when Mildred is upstairs, she sees her lamp and thinks Robin has stolen it...

While the flatmates compete to get the flat to themselves to entertain friends, George is trying to find jobs to avoid Mildred.

To please Mildred Roper, Robin goes on a dancing date with her while George decides to stay at home. However, George things something might happen between the two.

Robin gets a job as a door-to-door encyclopedia salesman, and needs some help.

George receives a huge gas bill and decides to open up his chimney, but it needs to be swept so he gets a gadget from Jerry to suck out the soot. Meanwhile, things have moved on considerably with Norman and Chrissy, which makes Robin jealous...

Roper raises the rent, and the flatmates need to find a fourth roomie to help pay it off.

Robin's brother Norman comes to stay for two days, and he takes a shine to Chrissy...

Chrissy and Jo throw a farewell party for their flatmate, who's getting engaged and moving out. Next morning, they find Robin asleep in their bath. They're looking for a new flatmate and he is looking for somewhere to live, so the girls ask him to stay, but will their landlords, the Ropers, agree to the new arrangement ?

Chrissy's mother is about to pay a visit. She doesn't know Robin is living in the flat, so he's told to make himself scarce, but as she's staying the night, where will he sleep ?

Jo's new boyfriend is coming to the flat for a meal. Robin is persuaded to cook, then leave with Chrissy to spend the evening playing monopoly with the Ropers. They learn that Jo's boyfriend is Jewish - and Robin has cooked roast pork for their meal!

Chrissy is very nervous when Jo goes away for the weekend and leaves her alone in the flat with Robin. He brings a woman back, but Chrissy becomes jealous...

The rent is due and the money put aside to pay it has disappeared from the flat. Robin, Chrissy and Jo have to find a way of getting some cash quickly.

Robin has been picked to play in a college football match. A few days before the game, he goes down with a bad cold. Chrissy and Jo rally round in an attempt to help him to recover in time to play.

Robin acquires a puppy. The lease on the flat says 'no pets', so Roper mustn't find out.

Robin, Chrissy and Jo take advantage of the Ropers being away by having a party!

Robin loses his self-esteem after being unable to defend himself to a mean Irishman at the pub. Chrissy and Jo try to make him feel better, but he decides he will take on the guy the next time he sees him...

Chrissy goes on a date with her new boyfriend. Robin, however, learns that he is married, and tries to stop the date before it becomes a total disaster.

Mr. Roper has had a grudge against Germans since the war. Chrissy makes the mistake of inviting him over for a meal with Robin and his German friend, Franz...

Jo is going on a date with Philip, but has forgotten that she is meant to be babysitting. Chrissy agrees to take her place and persuades Robin to come along, but when they arrive, it looks as if he is going to regret his decision as the TV is being repaired and the drinks cabinet is locked.