Upstairs: the wealthy, aristocratic Bellamys. Downstairs: their loyal and lively servants. For nearly 30 years, they share a fashionable townhouse at 165 Eaton Place in London’s posh Belgravia neighborhood, surviving social change, political upheaval, scandals, and the horrors of the First World War.

Men behave in a beastly, chauvinistic manner at an office party, turning what should be a fun break from work into an exercise in bad taste.

Anna can't seem to help ending up with the wrong partner in a line of disastrous affairs. Her hope now lies with a young man from the pop music scene.