A young couple's sex acts are witnessed by a young man through a hole in the wall. When the wife seduces him, they engage in an illicit affair. Chaos ensues when the husband learns about them.
Evading the police, Issa and her brother Tomas seek shelter in a secluded orphanage in the forest. But the siblings’ safe haven soon reveals itself to be a hellscape controlled by a sacrificial cult in thrall to a fearsome nocturnal deity.