Rumors fly when Captain Peacock gets too friendly with Mr. Rumbold's secretary at the Christmas party, and things get really out-of-hand when it seems they might have spent the night together.

A fuel shortage grips the country and Grace Brothers, so the stores furnaces are shut down for the day. The staff are freezing and soon develop unique ways to keep warm.

It's Mr. Grainger's 37th anniversary at Grace Brothers and the Department hosts a celebration dinner for him. It's a time of happiness, and dread, for if he receives a cuckoo clock then it means he's to be retired.

Mr. Grainger is selected to fill in for Mr. Rumbold while he is away; the staff wonder whether they should take advantage of Mr. Grainger's good nature, only to discover to their horror that he doesn't have one when he sacks Mrs. Slocombe.

After Mrs. Slocombe starts dropping hints that it's her birthday, the staff calculate that she is 50 and plan an appropriate party.

There's trouble afoot at Grace Brothers! Someone's been lifting Mrs. Slocombe's skirts and putting their hands in Mr. Grainger's drawers. Shoplifting has struck the store and Mr. Rumbold installs a store detective and a video surveillance system. It goes off track for awhile, as Mr. Rumbold turns into a voyeur and the staff act like they're on television. Ultimately, the staff decide to do in the scheme and prey on Mr. Rumbolds hypochondria to accomplish it.

When Mr. Grace decides to open the store early, the staff set out to sabotage the new policy.

The Store's redecoration plans threaten to interfere in the staffs vacations. Everyone is now expected to take the same two weeks off and there's disagreements on how to handle it. Grace Brother's Tour Group Company offers some package deals, but they are far from First Class.

A new display of perfume arrives from Bliss, but there is no Bliss Girl to man the counter. Mrs. Slocombe refuses the position, so Mr. Humphries becomes the Bliss Girl for the day.

Sales are falling once again and so Mr. Rumbold calls together a "think tank", a suggestion he "borrowed" from Captain Peacock. The staff decide that a fashion show would be the answer, but when Young Mr. Grace won't cough up the dough to hire proper models, the staff are forced to put on the show themselves.

Mr. Humphries' background as a dance instructor is called upon when the Ladies' and Gents' Wear departments form a team to compete in the inter-store ballroom dancing competition.

When the mechanical Father Christmas proves that it can't be trusted, Mr. Grace offers a bonus for one of the staff to portray the store Santa. Meanwhile, Mr. Humphries and Mr. Lucas attempt to help Mr. Grainger prepare for a song-and-dance show at an old-folks' home.

Mrs. Slocombe thinks she's finally got her man, a bouzouki player in a Greek restaurant. The staff plan a reception at the store to help keep costs down, and her American uncle plans on giving the happy couple a house. Before they can leave for the church, however, the best man arrives with bad news, forcing Mr. Tebbs to don the garb of a Greek vicar and Mr. Humphries that of the bridegroom.

Mrs. Slocombe is forcibly retired from her position. Mr. Humphries and Captain Peacock get her job back, but they are retired in the same manner. They end the show as the cleaner and the lift operator.

When Captain Peacock tries to salvage his marriage, he resorts to radical measures to discourage an admirer.

When Old Mr. Grace decides to allow the staff to use the store for after-hours money-making, they decide to open a nightclub. However, the advertising campaign has some rather unexpected results.

After finding that Grace Brothers' fire precautions leave a lot to be desired, Mr. Harman helps out training the staff in fire preparedness and a fireman gives Mr. Humphries a lift.

Young Mr. Grace invites his workers to form a social club - in a dismal cellar badly in need of decoration. Undeterred, the staff tackle the paint and paper job with vigor.

It is Young Mr. Grace's birthday and there is the traditional free lunch for staff in the canteen. Afterwards, the staff plan a much more festive event for the celebration.

Grace Brothers has decided to enter the video age and display advertisements on closed circuit television throughout the store. Meanwhile, there is a new face in Menswear.

Sales figures are down; profits are low. Young Mr. Grace is forced to make some economies. The threat of redundancies is looming. Someone is going to have to go - but who is it to be?

Captain Peacock's wife works at Grace Brothers, as Mr. Rumbold's secretary. He is intensely jealous and is absolutely convinced that the two of them are having an affair.

Mrs. Slocombe sells her home-made perfume. After a misunderstanding, Mrs. Peacock finds Captain Peacock without his pants (perfume had spilled on them) and the ill-fated trousers in the hands of Mr. Rumbold's secretary.

The staff perform a play on CB radio to advertise Grace Brothers. The play results in the store being swamped by truck drivers who are driven off by Mr. Humphries and Mrs. Slocombe.

When the store is robbed late one night, the staff determine to capture the burglars themselves.