When New York City experiences a major blackout, cops scramble to contain the resulting chaos, and Frank uncovers some unpleasant truths about his department in the aftermath. Also, Jamie and Eddie question the line between work and their relationship, and Danny and Baez race to question the subject of a murder investigation before she gets tipped off by her ex-boyfriend.

Eddie and her new partner, Maya, clash with Jamie on the job when they fail to intervene in a public dispute at a convenience store. Also, Danny and Baez investigate the death of a college freshman at a fraternity party, and Frank battles a lawsuit when a sergeant accuses the department of reverse racism and ageism.