1910, Arga, a small town in Galicia, a terrible curse falls on the wicked Marquise de Marino and his son, turning him into a werewolf in his tenth birthday. One hundred years later, Thomas, a failed writer and last male descendant of Marino, returns to town convinced that they will appoint an adopted son of the town. In fact, the neighbors think sacrifice in a dark ceremony to end the reign of terror werewolf who has a century gripping the region. Not carried out the slaughter of the last of the Marines on the exact date, a second curse fall on Arga. A curse more terrible consequences …