In the depths of Paris, two sisters stand in a haunting cemetery, their eyes reflecting the darkness of night. They are Louise and Henriette, orphaned predators with an untraceable past. They share a horrifying secret that consumes them every day, and their days become black as they wait for the night to fall.
The nights are bitterly cold and blue, but for Louise and Henriette, it's not enough. Their insatiable thirst for warm, bright-red blood compels them to roam the ill-lit streets of Paris, searching for unsuspecting victims who will sustain their unholy existence on Earth.
As they wander through the desolate streets, they encounter a group of children playing in the park. The children's innocent laughter is music to their ears, but soon, they realize that their thirst for blood is stronger than they thought. They begin to lure the children into their world, using their own dark past as a weapon against those who would dare to cross their path.
Their days become darker still, and the nights even more bitter. But there is no end to their reign of terror. They continue to hunt and kill, driven by their insatiable thirst for blood. And as the city becomes more dangerous, so does their reign of terror.
In the end, can there be an end to the blood-stained sisters' tyranny? It's a question that only time will answer.