A father and his son walk alone through burned America. Nothing moves in the ravaged landscape save the ash on the wind and water. It is cold enough to crack stones and, when the snow falls, it is gray. Their destination is the warmer south, although they don't know what, if anything, awaits them there.

2008 film

After years of increases in the greenhouse effect, havoc is wreaked globally in the form of catastrophic hurricanes, tornadoes, tidal waves, floods and the beginning of a new Ice Age. Paleoclimatologist Jack Hall tries to warn the world while also shepherding to safety his son, trapped in New York after the city is overwhelmed by the start of the new big freeze.