A man collapses during the reconstitution of a duel under the Empire, where weapons were to fire blanks. Captain Marleau takes on board the shooter, a flamboyant media lawyer with whom she has old scores to settle. The latter claims to be innocent, victim of an accident, even a machination, because the dead man was his friend. A new duel begins with the captain, whom he may be trying to fool... (thetvdb.com)