When a deadly mist engulfs Paris, people find refuge in the upper floors of the buildings. With no information, no electricity and hardly any supplies, Mathieu, Anna and their daughter Sarah try to survive the disaster.
Alex, Antoine and Manu meet Jean, a loner who ignores the pleasures of friendship. Little by little, they learn to know each other, to appreciate each other. Jean is moved by the complicity and affection that fuels the relationship with his new friends.
A lazy man becomes a prostitute.
