A woman named Mellie, living in a small, coastal French town, undergoes a traumatic experience when she is attacked and raped by a mysterious stranger. In a desperate bid to reclaim her sense of security and sanity, she kills the intruder and disposes of his body. As if that ordeal weren't enough, her actions soon draw the attention of an enigmatic American investigator named Dobbs, who seems to have an unsettling amount of information about her and the deceased.

Dobbs insinuates himself into Mellie’s life, persistently probing her for details about the incident and the stranger’s identity. His persistent questioning and mysterious motives create an atmosphere of increasing tension and paranoia. While Mellie struggles with her fear and guilt, she also finds herself drawn into a web of deception and intrigue that makes her question whom she can trust. As the investigation deepens, long-hidden secrets and complex interpersonal dynamics come to light, pushing Mellie further into a psychological maze she must navigate to survive.