Vincent Loreau (Matthias Schoenaerts), a French Special Forces soldier just back from Afghanistan, is suffering from Post-Traumatic Stress Disorder. He is hired to ensure the safety of Jessie, the wife of a wealthy Lebanese businessman in his "Maryland" property in the South of France. While he feels a strange fascination for the woman he must protect, Vincent is prone to anxiety and hallucinations. Despite the apparent tranquility on "Maryland", Vincent perceives an external threat...