In the heart of a city, the inhabitants of a tower wake up one morning to find that their building is shrouded in an opaque fog, obstructing doors and windows…

February 1927. The funeral of Marcel Péricourt, the most powerful banker in Paris. His daughter Madeleine must take the helm of the financial empire of which she is the heiress….

A catholic French couple sees their life upside down when their four daughters get married to men of different religion and origins.