In a serene, snow-covered town in the French Alps, the quiet of winter is shattered when a man named Samuel is found dead outside his chalet. The incident initially appears to be a tragic accident, but suspicions quickly arise, casting a shadow over his wife, Sandra. A successful writer with a complex past, Sandra becomes the prime suspect in what soon transforms into a highly publicized murder investigation. The couple's young, visually impaired son, Daniel, becomes a crucial figure in the unfolding drama as his perspective and testimony hold substantial weight in the case against his mother.

As tensions escalate and secrets unravel, the courtroom becomes a battleground where personal histories and familial bonds are scrutinized. Sandra's character and motivations are put under intense examination by both the prosecution and the defense. The story delves into the nuances of truth, perception, and the ambiguous nature of relationships. The emotional struggle of their son, caught between love and doubt, adds a profound layer to the legal and moral questions at the heart of the narrative.