Zulma is a teenager growing in a rural town and assuming the mandates her family and religious community impose on her, until something happens that prompts her to take the reigns of her own destiny.

Lucía is a psychologist who works for Line 117, assisting victims of domestic violence. One stormy night, a dark force breaks into her home and attacks her. Obsessed with discovering her attacker, Lucía is drawn into a spiral of shadows that draws her to the cursed lair of Guri, a worshiper of Mithras, a pagan deity.