The true story of Maureen Kearney, the head union representative of a French multinational nuclear powerhouse. She became a whistleblower, denouncing top-secret deals that shook the French nuclear sector. Alone against the world, she fought government ministers and industry leaders, tooth and nail to bring the scandal to light and to defend more than 50,000 jobs.. Her life was turned upside down when she was violently assaulted in her own home... The investigation is carried out under pressure: the subject is sensitive. Suddenly, new elements create doubt in the minds of the investigators. At first a victim, Maureen becomes a suspect.
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.