In the shadows of a city, hearts break, radical plans are hatched, and secrets refuse to stay buried. In 2014, Paris is a place of stark contrasts and simmering tensions. A lawyer schemes to escape a life of extremism, while his associate—an ex-convict—spreads chaos and feeds his own wife's suspicions. A grieving woman encounters a queer American who offers hope at a steep personal cost. In the suburbs, a young musician discovers that his little brother is being radicalized by a neighbor. He turns to an unlikely ally—a wily concentration camp survivor— who holds the key to resolving everyone's fates—if she can only remember what she must do.