Olivia works the late shift at the local Exit Bureau, where she spends her nights convincing people to end their lives for society's greater good. One evening, after her supervisor issues a chilling ultimatum, her world begins to fall apart.

Global temperatures plunge after an earthquake hits in the middle of the Atlantic Ocean. As the world starts to freeze over, and cities fall into ruin, scientists must figure out a way to raise the temperature before the next Ice Age.