Neighbors Spencer and Louise have bonded over their fascination with a recent string of murders terrorizing their community. When a new tenant named Victor moves into the building, all three quickly hit it off. However, they soon discover each has his or her own dark secret. As the violence outside mounts, the city retreats indoors for safety. But the more time these three neighbors spend together in their apartment building, the clearer it becomes that what they once thought of as a safe haven is as dangerous as any outside terrors they could imagine.

Takes place in 1995, the year of the second referendum on the separation of Quebec. In the dead of winter, a serial killer is on the loose in the small Montreal neighborhood of Notre Dame de Grace. The tenants of an old apartment house must figure out who they can trust and who they can't.