Alice Gould, a private investigator, pretends to be mentally ill in order to enter a psychiatric hospital and gather evidence for the case she is working on: the death of a patient in unclear circumstances.

A group of friends are having a party on a boat. In the distance, a small town watches them in silence. Suddenly, one of them is seriously injured and the group approach the village for help. No one attends, the few inhabitants they find order them to be quiet and disappear into the darkness. The group split for help and strange and terrifying things start to happen, some of them are killed in terrible circumstances. Those who still live, increasingly terrified, discover the reason for all these murders. If they want to leave the village alive and the house where they are locked, they will have to survive in absolute silence.