Andy and Chloe are blindsided when they respond to a routine 911 call and an unseen shooter gravely wounds Chloe. After shots are fired at a subsequent emergency call, the officers realize they are the targets of someone with a grudge against 15 Division. The team must continue to serve and protect the community while in the line of fire - and hopefully figure out who is hunting them before anyone else gets hurt. When Andy figures out that the shooter is Kevin Ford - the suspect that Marlo had been stalking in her manic state - Andy suspects that her transgression in helping Swarek cover for Marlo's actions may have come back to bite them all. Swarek and Andy realize that off-duty Marlo might also be in trouble and head off to find her before Ford can. Andy and Swarek find Marlo safe, but Oliver's arrival at Marlo's house brings him face-to-face with Kevin Ford.
A fun, fresh, high-stakes drama with a twist of danger follows the lives of five young, ambitious cops right out of the Academy. From their very first day on the job, these rookies are plunged into the world of big city policing, a world where even the smallest mistake can have life-or-death consequences and serious emotional fall-out.
The soul of this close-knit group is 26-year-old perfectionist Andy McNally. Honest to a fault, all Andy has ever wanted to be is "good police". Her father was a cop, and while he wasn't the best cop - or the best father - Andy knows she'll never find this sense of family, loyalty and excitement in any other job.
The series explores the trials, triumphs, competition and camaraderie of Andy and her rookie family - boyfriends, best friends, mentors and competitors - who are about to learn that no amount of training can prepare them for life.