Paris is enveloped by A deadly and strange mist. A group of survivors finds refuge on the upper floors of apartment blocks and onto the roofs of their backing. With no information, electricity, water or food, a few tries to survive this disaster and save their daughter... However, since the hours go by, 1 thing becomes pretty clear: there isn't any help on the way, of course, if they want to make it during that tragedy living, they might need to use their luck at the mist...