Tom Selleck stars as Frank Reagan, the New York Chief of Police. Frank's eldest son Danny is a seasoned detective, family man, and Iraqi War vet who on occasion uses dubious tactics to solve cases.

A good Samaritan with a police record takes action against a terrorizing subway criminal, forcing the Reagans to weigh the rights and wrongs of vigilantism.

After meeting with federal agents in a dark edge of Chinatown, Jamie witnesses a crime in progress and his suspect is killed while in pursuit. Now, Danny must solve the case in order for Jamie to avoid an Internal Affairs investigation.

The life of a Reagan is put in danger when three dangerous criminals are released from prison.