Season Four begins six months after Andy and Nick leave for their undercover operation. We return to 15 Division with them – and quickly realize that everything seems to have changed. But that’s what being a cop is, right? Adapting to new situations, rolling with the punches... Change is constant, and if you don’t adapt, you're left behind. Last season, our officers got what they wanted and had to deal with the repercussions. This year, they will have to look change right in the eye and learn to adapt -- leaving them with some big, bold choices to make.