The film is inspired by the real-life case of the murder of French filmmaker Sophie Toscan du Plantier and imagines a trial that never took place against the alleged culprit, Eion Bailey. At the heart of the story is Juror No. 8 (Vicky Krieps), the only one who refuses to immediately agree to a guilty verdict, opposed by Juror No. 3 (John Connors), who is more impulsive and tormented.