Three groups of people are trying to survive Purge Night, when their stories intertwine and are left stranded in The Purge try to survive the chaos and violence that occurs. A couple are driving home when their car breaks down just as the Purge commences. Meanwhile, a police sergeant goes out into the streets to get revenge on the man who killed his son, and a mother and daughter run from their home after assailants destroy it. The five people meet up as they attempt to survive the night in Los Angeles.