
Tom Selleck stars as Frank Reagan, the New York Police Commissioner, and patriarch of the Reagan clan, a multigenerational family of cops. Frank's oldest son is Danny, a seasoned detective and Iraqi War veteran who occasionally uses dubious tactics to solve cases. Daughter Erin, the lone female, is an assistant district attorney. Fresh out of Harvard Law, Jamie is the youngest member and "golden boy" of the family. Jamie gave up a lucrative future in law to continue the family's tradition in police work, and is asked to participate in a secretive investigation that even his father does not know about.
Eddie's judgment is clouded by her past when she arrests a loathed college acquaintance; Frank is hesitant to mar the spotless record of a member of the force who tested positive for marijuana.
Danny must track down the drug cartel that attacked a convoy transporting drugs to be incinerated, leaving Baez seriously injured; Frank must tread carefully when a lieutenant's actions cause controversy for the police department.
Jamie stands up for a fellow officer who is being ostracized for testifying against her partner; sports analyst Boomer Esiason makes a difficult request of Frank.
When an officer is outed and his partner refuses to ride with him, Danny and Baez are asked to work with new partners temporarily; Eddie and James try to steal a collar from a pompous detective; Frank speaks out about equality on the force.