Revoir, arrives at his new hometown to meet his sister after many years of not seeing her, when he arrives he finds out she died, he vows to find the killer, who he thinks was the family that she was working for at the time, he then decides to move in with the family with a new personality and confidence, a victim of the "wolves", his sister suffered, he becomes a "wolf" himself to seek revenge within the "den of wolves" that are the Genevieves and the "darkest of skies" as are the situations and obstacles.