Chrissy and Jo wind up finding a new flatmate, a cook named Robin, but this arrangement may not be okay with the Roper's.
Chrissy and Jo have to stow Robin away when Chrissy's mother visits unexpectedly.
Robin cooks Jo's boyfriend dinner for the evening, but there's a problem...Robin cooked pork roast and Jo's boyfriend is Jewish.
When Jo's away, Robin and Chrissy are left alone together, but the problem is, Robin would rather spend the evening with his date, outcasting Chrissy to her room.
Robin, Chrissy and Jo avoid the Roper's when they can't find their rent money.
Robin's all prepared for a game of football...problem is, he's thinking of the wrong kind of football.
After Robin gets a puppy, he, Jo and Chrissy try to stop George from finding out as their lease doesn't allow them to have any pets.
Whilst the Ropers are away, Robin, Chrissy and Jo decide to throw a party.
Robin suffers from a lack of confidence after being unable to defend himself at the pub. Both Chrissy and Jo atempt to make him feel better. Robin decides to take on the next man he comes in contact with.
When Robin finds out that the new man that Chrissy is married, he tries to stop her from going on a date with him.
George has had a grudge against the Germans since the second world war. Geroge ends up being invited by Chrissy over for a meal on the same night that Robin has invited over an old German friend from college.
Jo has a date arranged on the same night she has agreed to babysit. There is chaos when Robin and Chrissy babysit in her place.
When Robin fails his cooking exams his father wants him to move back to Southampton to work for him. Larry wants to be the girls new flatmate.
With Larry staying in the flat he drives everyone crazy. The others try and find him a new place to live.
When Robin starts a relationship with an old friend of hers, Chrissy is upset.
When Robin goes to a party at Chrissie and Jo's work he fails to fit in.
When Chrissy and Jo discover a mouse in their room, Robin tries to use the situation to his own advantage.
When Mildred and Chrissy have some secret admirers, George and Chrissy become determined to find out their identities.
When Mildred goes away for the weekend, George attempts to take advantage of the situation by trying to trick Robin, Chrissy and Jo out of their flat.
Chrissy stands in for Robin in a poker game after he is in hospital getting his tonsils removed. The only problem is that Chrissy doesn't know how to play.
After Robin, Chrissy and Jo borrow George's car to watch a football match it breaks down. George is in the pub wearing his new wig as they try to get the car back without him finding out what happened.
Chrissy decides to learn how to drive when it looks like Robin could loose his license. George tries to make some home beer.
Robin is forced to spend the night with George whilst Jerry fixes the flat upstairs from woodworm.
Robin finds himself in hot water after Larry uses his name on a date. Robin then tries to sort out his problems with Linda.
When Chrissy's mother pays a visit she attempts to make Robin and Chrissy a couple.
George could be in serious trouble after the revenue services discover that he has been claiming a son for the last 19 years.
After Larry uses Chrissy's cine camera to film a special type of film, it ends up in the wrong hands.
George sells a piano to Robin but finds it impossible to get it upstairs.
After Robin gets a job selling encyclopedia door to door he needs a little help.
When a girlfriend has to reschedule their date, Robin tries to change the night he has the flat to himself.
As Robin, Chrissy, and Jo tidy up the Roper's garden they see a plant they like the look of and decide to keep it upstairs. Larry says the plant is a cannabis plant much to their shock.
Both Robin and Jo are determined to get their hands on some tickets to see Frank Sinatra which Chrissy doesn't want and will do anything to get them. It's George and Mildred's wedding anniversary.
The Ropers fall out after Geroge cancels Robin and Chrissy's party. George tries to win Mildred back after she leaves him.
When George raises their rent, Robin, Chrissie and jo decide they need to find another roommate to help pay for it but they cant agree on who to choose.
George decides to stay at home whist Robin goes dancing with Mildred. George starts to believe something might happen between the two of them.
Chrissie, Jo and Robin feel pale when they look through some holiday brochures. Larry get some suntan lamps which he and Robin use.
Robin's brother Norman pays a visit who always seems to bale to do nothing wrong in other people's eyes. Robin is upset when Chrissie decides to go on a date with him.
Things develop between Chrissy and Norman. Before Robin can get the chance to tell Chrissy how he really feels about her, Norman announces their engagement.
Chrissy and Norman prepare to get married. Robin bakes them a cake as everyone celebrates their wedding.