Paris, January 1895. Army officer Georges Picquart witnesses a convicted spy, Captain Alfred Dreyfus, being humiliated in front of 20,000 spectators baying 'Death to the Jew!' The officer is promoted and put in command of shadowy intelligence unit, the Statistical Section. The spy is shipped off to a lifetime of solitary confinement on Devil's Island and his case seems closed forever. But gradually Picquart comes to believe there is something rotten at the heart of the Statistical Section.