The New Guest.

A woman is sent to a remote cabin by her therapist, as she finalises her treatment on recovering from an abusive relationship. Her therapist has also sent another client there at the same time. Their tasks are unclear. After several days, they are joined by their best friends. The woman's ex partner seeks out her location by any means necessary. He joins forces with the other client's abusive ex, in a bid to descend on the therapy session.