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.
Andy must make peace with her past when she's forced to work a bank robbery case with the newly promoted Swarek on her first day back at 15 Division. The investigation leads them to a violent ex-convict determined to get his old life back at any cost. Meanwhile, Nick and Gail help a distraught woman who offers Nick some perspective on his life with Gail, and Frank drops a bombshell on Noelle.
Andy and Nick continue to work undercover infiltrating a meth pipeline. However their covert mission goes sideways when first Nick and then Andy go missing. Meanwhile, a random arrest at 15 Division puts Sam Swarek and the other officers in the middle of the drug investigation-turned-rescue operation. Finally, Andy must figure out how to cope with the transformation of her own life as well as those of her friends at the station and continue to do the job she loves.