Simon lives with his aging father Joseph in the south of France. When a massive wildfire devastates their tree-covered coastal region and as the warning siren reaches their home, the two must leave everything behind to escape. But the wind intensifies and the air fills with smoke as they get caught in a massive traffic jam with other evacuees while the fire is getting closer and closer. With ash soon falling like snow, the temperature rising and a menacing fire approaching, Simon must quickly find a way out to save himself and his weakened father.