Frank (Pierre Deladonchamps) spends his summer days hopelessly searching for companionship at a popular cruising spot on the shores of a lake in rural France. One day, he meets Michel (Christophe Paou), an attractive yet darkly mysterious man, and falls blindly in love. When a death occurs, Frank and Michel become the primary suspects, but they choose to ignore the dangers and instead continue to engage in their passionate and potentially lethal relationship. "Stranger by the Lake" is an erotic thriller that tests the lengths and limits of sexual desire.