A man wakes up with no memory of who he is, and finds that everyone who comes within a certain distance of him suddenly dies.

Forced underground by the next ice age, a struggling outpost of survivors must fight to preserve humanity against a threat even more savage than nature.

Ambitious young cops try to prove themselves in their high-stakes careers, in which the smallest mistake can have deadly consequences. At the core of the close-knit group is perfectionist Andy McNally, whose father was a homicide detective before he burned out on the job. The series follows Andy and her four colleagues -- Dov Epstein, Gail Peck, Traci Nash and Chris Diaz -- as they experience the trials, triumphs and tribulations of police work, as well as its effect on their personal lives.