Rose and Lana are sisters, both married and living next door to each other in Lankworthy Road, Muswell Hill - a London suburb. Gerald Garvey is an underpaid, middle-class executive who has a snobbish attitude, but he and Rose don't have the income to back it up. Harry Butt, on the other hand, is an affluent, working-class fitter, and he and Lana never miss the chance to show off their luxury goods and lifestyle in front of their poorer relatives.