When two young, attractive girls, Chrissy and Jo, search for a third sharer to help pay the rent on their Earl's Court flat, they intended on finding another female. But they reconsider when they meet young Robin Tripp, a catering student whom they discover asleep in their bath the morning after a party. It just so happens that he is on the look out for somewhere local to rent, he tries to win the girls over with his wit and charm, but it is his culinary skills that make him the dish of the day as far as Chrissy and Jo are concerned and so Robin becomes their third flatmate.

This innocent menage a trois understandably raises a few eyebrows, particularly with their landlords, George and Mildred Roper, who live downstairs.