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 ?

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.