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.
Single mother Elaine is disturbed by her son Martin's aggressive behaviour, she visits his late father's estranged family in small-town Luxembourg, which hides a much darker nature. When she realizes that Martin could become like them, E…