NYPD detective Danny (Donnie Wahlberg) and his partner are endangered when a criminal with a grudge is released from prison. Meanwhile, his brother Jamie (Will Estes) adjusts to his new, debatably unorthodox partner on the force. Ex-commissioner Henry (Len Cariou) and his son Frank (Tom Selleck) experience a new bond when old family secrets are revealed. Danny finds himself in a situation that draws the family together to prove his innocence and save the Reagan reputation, while departed loved ones are remembered. Though they will be tested by many challenges, it's the family bond that will see them through.