The passionate Andre-Louis Moreau makes an unexpected entrance into the French Revolution when he vows to avenge his best friend's death. His target: Monsieur de La Tour d'Azyr, the aristocratic villain who killed his friend. Andre-Louis rallies the underclass to join him in his mission against the supreme power of the nobility. Soon the rebel leader must go underground, disguising himself as "Sacramouche" in a traveling group of actors. In the midst of his swashbuckling adventures and his country's revolution, he discovers the secret of his own identity.