Five young and ambitious rookie cops continue to navigate the emotional trials and tribulations of their professional and personal lives.
Last summer these rookies hit the streets for the first time with their training officers and learned how to walk the thin blue line. Now the training wheels are off — more experienced, they're ready to kick some serious butt.
But these rookies are just beginning to realise there are no shortcuts to becoming good at this job. And when you're a rookie officer, a little knowledge is a dangerous thing.
For Andy McNally — the rookie at the centre of Division 15's newest and finest — the chaotic world of policing is almost as rough a terrain to navigate as that of her complicated personal life.
She managed to step out of her screwed-up, ex-cop father's unfortunate shadow to forge her own path.
However, as Andy discovers, when you weave the chaos of superior officers, romantic liaisons, absentee family and the pressures of being a 20-something newbie into the fabric of this brother-and-sisterhood in blue, you get a world where danger, sex and high-stakes drama intermingle with the natural heartbreak of policing.
Meanwhile, Dov Epstein's close calls have given him a new perspective on his formerly reckless approach to the job; Traci Nash is finding out the hard way that the balance between parenting and policing is an even finer line to walk than the blue one; Chris Diaz is starting to realise that his fastidious adherence to the rules might be holding him back; and Gail Peck is starting to think that her family connections might be weighing her down, not propelling her forward.
After seven months on the beat, these five rookies have learned how to be cops. They've experienced a learning curve that's steeper than they ever imagined, and they've learned first-hand that making a rookie mistake could cost them — or someone else — their life.
In the next seven months on the job, they will do it all again — only better.