Jamie and Eddie find themselves at odds when Jamie learns that Eddie's close friend Tracey may be using the restaurant she owns as a drug front. Also, Erin forms an alliance with Anthony and her ex-husband, Jack Boyle, when she is accused of causing the sleeping of a former colleague. Meanwhile, Frank weighs whether he should fire a female officer who has an online profile featuring naked photos of herself and Danny and Baez try not to be influenced by their own biases when they are faced with various descriptions of the same suspect.
Frank Reagan is the New York Chief of Police and patriarch of the Reagan brood, which he heads as diplomatically as he does the force, even when dealing with the politics that plagued his unapologetically bold father, Henry, during his stint as Chief. A source of pride and concern for Frank is his eldest son Danny, a seasoned detective, family man and Iraqi War vet who on occasion uses dubious tactics to solve cases. The sole Reagan woman in the family, Erin, is a N.Y. Assistant D.A. and newly single parent, who also serves as the legal compass for her siblings and father. Jamie is the youngest Reagan, fresh out of Harvard Law and the family's "golden boy".
However, unable to deny the family tradition, Jamie decided to give up a lucrative future in law and is now a newly minted cop, a career change seemingly supported by his beautiful girlfriend, Sydney Davenport, a first year lawyer. Jamie's life takes an abrupt turn, however, when he's asked to become part of a clandestine police investigation even his father knows nothing about, and one that could impact the family's legacy.