Mathieu will stop at nothing to get his 11 year-old daughter Sarah out of the hermetic chamber she lives in since she was born, struck by a childhood illness. Suddenly, an earthquake hits Paris. A deadly fog seeps out of the earth. Panic spreads across the city. Mathieu and Sarah's mother Anna are among the few survivors who find refuge on the rooftops and upper floors of the tallest buildings. Knowing they can count only on themselves, and pressed for time, they have to find a way to make it outside through the fog ...
