After paleoclimatologist Jack Hall is largely ignored by UN officials when presenting his environmental concerns about the beginning of a new Ice Age, his research proves true when a superstorm develops, setting off catastrophic natural disasters throughout the world. Trying to get to his son, Sam, who is trapped in New York City with his friend Laura and others, Jack and his crew must travel to get to Sam before it's too late.

Survivors of a nuclear attack are grouped together for days in the basement of their apartment building, where fear and dwindling supplies wear away at their dynamic.

While going through a difficult divorce from her domineering, businessman husband, Alexandra moves back into her old childhood brownstone home, where she sets out to uncover dark family secrets from when she was a young girl, involving her Aunt Judith's murder and her mother's descent into insanity. The only clue is a key to a mysterious secret room that lies within the house. As a series of bizarre and unsettling incidents prod Alexandra to investigate her past, she finds herself wandering deeper into danger as her past comes back to haunt her.