
Season 1 of Blue Bloods introduces viewers to the Reagan family — a multi-generational clan of New York City law enforcement officers, with justice running deep in their blood.
At the heart of the series is Frank Reagan, the NYPD Police Commissioner, who must balance the demands of his job with those of his family. His eldest son, Danny, is a tough NYPD detective and Iraq War veteran known for his “by any means necessary” approach to solving crimes. Erin, Frank’s daughter, works as an assistant district attorney, often navigating the gray areas between law and justice. Meanwhile, Jamie, the youngest Reagan, has just joined the force as a rookie cop, but his path takes a deeper turn when he’s approached to investigate a secretive police corruption group known as the Blue Templar—a subplot that slowly builds across the season.
Each episode follows a case-of-the-week format, blending police procedural elements with personal family dynamics. Through Sunday family dinners and daily moral dilemmas, the Reagans tackle tough issues like loyalty, integrity, and sacrifice.
The season builds toward a climax involving the mysterious death of Frank’s other son, Joe, who was also a cop and may have been murdered because of his ties to the Blue Templar investigation. As Jamie digs deeper, the conspiracy begins to unravel.