Javi, a young rent boy living in Madrid, comes to a sauna club looking for a job. But soon he'll find out a place full of secrets, the biggest of them being a strange man who will fall in love with him: the Phantom of the Sauna.
A mother moves into an old family home to undergo a rigorous treatment that she hopes will help her autistic daughter communicate. The therapy seems successful when the girl miraculously begins to speak. However, she soon discovers that her daughter has come into contact with the tortured entities of the place, who return from beyond to collect a dark debt from the past
