When a chain of volcanic eruptions rips through Europe, the enormous ash cloud blocks out the sun, plunging the continent into a new ice age. An American couple must find their kids and get them out of Paris before it freezes over.

After moving to an isolated cabin, Jacob Taylor vanishes without a trace. With the help of footage he leaves behind, his family members, friends, and a detective try to find answers to the strange events that are centered around him.