In fin-de-siecle Copenhagen, part-time prostitute Charlotte and her lumpen sidekick, Fru Schleswig, have taken on jobs as cleaning ladies of dubious talent to tide them over the harsh winter of 1897. But the home of their neurotic new employer, the widow Krak, soon reveals itself to be riddled with dark secrets - including the existence of a demonic machine rumoured to swallow people alive. Rudely catapulted into twenty-first-century London, the hapless duo discover a whole new world of glass, labour-saving devices and hectic, impossible romance.