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

As the Paris firefighters try to stop the flames from spreading in the Cathedral, the show also follows characters being put through the wringer - they will have to fight each other, love each other, come across each other, hate each other, smile at or help each other - so that, in the end, they may have a chance to start all over again.