In 17th/18th century France, the best friend of the future regent of Paris falls victim to a murder plot. Considered an invincible fencing master, he was the only one who had mastered the legendary Nevers thrust, an unblockable sword thrust to the forehead of his opponents. Thus, he could only be defeated by an overwhelming superiority of fighters. Another fencing master swore revenge on those involved in the plot and relentlessly and cunningly pursued them throughout Europe and into the highest circles of Parisian society for years.