In 1803, Napoleon came up with the idea of creating a secret unit to carry out special sensitive tasks. In fact, this was the first sabotage group created under the personal control of the emperor. Louis Caranelli, a Corsican, the emperor's neighbor in Ajaccio, was appointed commander of the special group. Cornet Nikolai Danilov, a descendant of a princely family, serves in a dragoon regiment during the campaign of 1805 and witnesses the murder of General Schmit and the unsuccessful attempt on Bagration, committed by Caranelli. Nikolai realizes that all this is not accidental. He tries to tell his colleagues, even submits a report to the command, but they laugh at him. However, mysterious events continue, and Danilov begins his own investigation...