Unknown Person

When athletic teen Mari Collingwood opts to hang out with her friend Paige in town rather than spend an evening in with her parents vacationing at the family's remote lake house, it marks the beginning of a night no one is going to forget.

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.