The daily lives of the personnel of the St-Vincent hospital in Montréal.
Fermont: A remote mining colony in the endless frozen hell that is Canada's far North. The body of a young exotic dancer is found and the Quebec City police sends one of their toughest, most experienced detectives to investigate. Céline sure is always up for a challenge. Being cooped up in the massive structure that is the colony – the inhabitants simply call it “The Wall” – soon presents her with some challenges that exceed her investigative efforts.
After years of keeping his detectives at the headquarters, the Montreal PD has decided to reassign them to neighbourhood precincts in an effort to get closer to the population. Nadine Legrand and Patrick Bissonnette have to find their footing in their new work place: District 31.
The show follows a special police unit dedicated to fighting organized crime and major criminal networks, including street gangs, biker gangs, Italian/Irish/Lebanese mafias, and Mexican cartels.