In a quiet French town, a woman named Christine leads an apparently normal life, but inside, emptiness and disillusionment consume her. After separating from her husband, she feels trapped in her daily routine and clings to the small things around her, especially the view from her window. As she observes the lives of her neighbors, she begins to delve into the lifestyle of a mysterious man who has moved into the building across the street.
Things take an unexpected turn when Christine starts to fall in love with this stranger, a solitary artist whose life seems so exciting and full of nuances compared to her own. While spying on his activities, she begins to construct stories in her mind about him, and gradually, her obsession grows. However, Christine's love for this enigmatic figure turns into a dark fog that clouds her perception of reality, leading her to question not only her own life but also the nature of human connection.
The story evolves into an intense psychological game that explores the boundaries between passion and madness. Through her gaze into the lives of others, Christine realizes that, despite her loneliness, connection with others is fundamental, although sometimes the desire to get closer can lead to unexpected consequences. In a world where appearances can be deceiving, her quest for love will take her down a dark and revealing path.