Season 15 of Blue Bloods opens with the Reagan family facing a rapidly shifting landscape in New York City law enforcement. Frank Reagan, still serving as Police Commissioner, finds himself caught between political pressure from City Hall and the realities on the street. As new leadership in city government demands reforms and accountability, Frank must balance his duty to the badge with his loyalty to his officers, testing his leadership like never before.
Danny Reagan, now a seasoned detective, is forced to reexamine his own approach to justice after a string of high-profile cases put him in the public eye. Partnered once again with Detective Baez, the two navigate complex investigations that push the boundaries between law and morality. Danny’s tough instincts clash with modern expectations, and his relationship with his sons deepens as they begin to consider following in his footsteps.
Erin Reagan enters her campaign for District Attorney with newfound determination. Season 15 explores the personal sacrifices she must make, as political opponents dig into her past and question her motives. While she works tirelessly to prove herself as a fair but firm candidate, her bond with her daughter Nicky is tested, reminding Erin of the fine line between her professional ambitions and her personal life.

Jamie Reagan, now a commanding officer, continues to grapple with the challenges of leadership in the NYPD. His marriage to Eddie grows stronger, but their work-life balance is constantly tested by the dangerous nature of their jobs. As always, the Reagan family dinners provide the emotional heartbeat of the season, where generational perspectives collide but love and loyalty remain unshaken. Season 15 ultimately highlights the enduring strength of the Reagans as they face the future of law enforcement together.